重庆市名校联盟2020届高三“二诊”模拟英语试题(A卷) (含答案)

重庆市名校联盟2020届高三“二诊”模拟英语试题(A卷) (含答案)
重庆市名校联盟2020届高三“二诊”模拟英语试题(A卷) (含答案)

试卷类型:A 重庆市名校联盟高2020级“二诊”模拟考试

英语

(考试时间:120分钟试卷满分:150分)

注意事项:

1. 答卷前,考生务必将自己的姓名、准考证号填写在答题卡上。

2. 回答选择题时,选出每小题答案后,用铅笔把答题卡上对应题目的答案标号涂黑。如需改动,用橡皮擦干净后,再选涂其他答案标号。回答非选择题时,将答案写在答题卡上,写在本试卷上无效。

3. 考试结束后,将本试卷和答题卡一并交回。

第一部分阅读理解(共两节,满分40分)

第一节(共15小题;每小题2分,满分30分)

阅读下列短文,从每题所给的A、B、C和D四个选项中,选出最佳选项。

A

Enjoy an amazing time in Lake Tahoe, CA with the fantastic show, Magic Fusion! This fantastic display features a variety of talented magicians who each take to the stage with their own flare, tricks, and illusions(视觉幻想) that will have the audiences who witness the show on the edge of their seats.

Presented by the amazing Loft Theatre, this show has seen the likes of famous magicians such as Robert Hall and Chipper Lowell. Each evening stars a different magician as well, so you can enjoy a variety of talented performers all on the same stage. It is great for all ages, so you can bring the entire family along to be excited and entertained during this 75-minute performance. You never know what you may see, so do not miss out!

The Loft Theatre is Lake Tahoe’s premier place for entertainment and delicious food. Not only is it home to amazing shows that will entertain and thrill, but it is also home to a dining experience that serves up some mouthwatering meals. Before your show, be sure to grab a bite to eat before

heading over to enjoy the Loft. It is located in the extremely popular Heavenly Village area of Lake Tahoe next to sparkling fountains and the famous Heavenly Toy Shop. It also features a lounge(休息室) and guests who arrive early can enjoy food, fun, and magicians who will wow you with tricks for that extra dose(量) of entertainment!

For an amazing experience that you will not soon forget, be sure to enjoy this fantastic performance at the Loft Theatre!

Enjoy this amazing show that will keep you guessing with tons of great tricks and illusions to keep you and your whole family entertained. You can be on the edge of your seat with this option of regular seating to witness this fantastic show, or experience the Magic Fusion show in the best seats possible. Order your tickets today!

1.What can we learn about Magic Fusion?

A.It is intended for all the family members.

B.The display will last for one and half hours.

C.Different performers will be performing together.

D.Audiences will be invited onto the stage during the show.

2.The Loft Theatre .

A.lies in a famous largely populated area

B.is well-known for the surrounding scenery

C.serves food before and after the performance

D.provides those who come early with extra show

3.What is true about the arrangement of the performance?

A.The performance on Friday finishes earlier.

B.The show starts from 9:00 pm every Tuesday.

C.There are two performances available every Sunday.

D.Regular and VIP seating are offered on different days.

B

Tiredness, coughing, a runny nose and a sore throat—among all sicknesses there is probably none more common than the flu (流感), which we all get now and then. However, bird flu is a completely different story.

In 2003, the H5N1 bird flu swept across 15 countries, including China, with sufferers reporting chest pain, difficulty breathing, fever and severe coughing. More than 600 people were infected, and about 60 percent died. Now, another type of bird flu hit Shanghai and three neighboring provinces, and this time the virus is called H7N9. By the afternoon of April 11, the new virus had taken nine lives out of 35 infected, according to Xinhua News Agency.

The “H” and “N” in the virus’ name refer to two kinds of proteins (蛋白质) on the surface of the virus. Any change of the numbers of the two proteins indicates a new mutation(变异). Most of the mutations only affect birds, such as chickens and pigeons, and don’t normally spread to humans. But once they do, the results can be disastrous.

“Any time an animal influenza virus crosses to humans, it is a cause for concern, ” Malik Peiris, virologist (病毒学家) at the University of Hong Kong, told Nature magazine. Take the SARS epidemic (传染病) in 2003 as an example. The virus behind the disease is thought to have jumped to humans from animals. The virus was a complete “stranger” to human bodies, which hadn’t developed an immunity (免疫力) against it.

But there is something more about the new H7N9 bird flu. Unlike the H5N1 bird flu, which causes severe sickness in birds, the H7N9 has been evolving under the radar(悄悄地) since it travels between birds without causing noticeable illness. That makes it difficult to keep track of the disease.

The good news is that there’s so far no sign that the virus is spreading from person to person. But since there is no vaccine (疫苗) for the disease yet, the World Health Organization recommends that you wash your hands after meeting with sick people and before and after you eat or prepare

food, and they also suggest avoiding contact with birds or their eggs.

4.Which of the following statements is TRUE according to the text?

A.The H5N1 bird flu turned out to have something to do with the SARS epidemic.

B.More than 600 people across the world died from the H5N1 bird flu in 2003.

C.Most of the mutations of the proteins in the bird flu virus are harmful to both birds and humans. D.The name, H7N9 bird flu, shows that there have been new mutations of the proteins in the virus. 5.With the example of the SARS epidemic in Paragraph 5, the author intends to . A.introduce where the SARS virus came from

B.inform us of the harmful effects of the SARS epidemic ten years ago

C.show the horrible effects an animal influenza virus can have once it spreads to humans D.compare the differences between the SARS epidemic and the H7N9 bird flu

6.What makes the H7N9 bird flu more frightening than the H5N1 bird flu according to the text? A.It can cause severe sickness in birds.

B.It can spread from person to person.

C.It affects a greater number of birds.

D.It doesn’t sicken birds and thus can spread unnoticed.

7.What are people advised to do to protect themselves against the H7N9 bird flu?

a. To get vaccinated for the disease.

b. To keep away from birds and their eggs.

c. To stop eating chickens and ducks.

d. To avoid meeting with sick peopl

e.

e. To wash hands thoroughly and regularly.

A.a, b B.c, d C.b, e D.a, e

C

When considering housing options at the University of Waterloo in Canada, Nigerian undergraduate student Ayooluwa Solaja chose a Living Learning Community, a residential house focused on a theme or academic interest area. Solaja lived on campus with 10 to 1s other students in the Arts and Business LLC.

Three reasons may account for the prospective international stadents willingness

to consider LLCS.

1. Connect with like-minded students: Prospective international students can choose an LLC to fully experience college life in a new country and find immediate support among residents: Unlike

other housing arrangements, LLCS can provide a built-in community of like-minded individuals Solaja says a highlight of her experience in the LLC was"forming relationships with upper-year students in my program. This peer leader provided her with everything from academic support to guidance on how to survive Canadian winters. Many LLCS have upper-division students who serve as peer leaders.

Australian Natasha Fitzpatrick says she's happy to share her love for travel and cultural exploration. "A group of us hired a car and traveled down to North Carolina sightseeing.”

2. Participate in community activities: For those worried about being on the outside as a new international student, LLCS encourage participation through various on-and off-campus activities. For example, students in a fashion LLC have attended Toronto Fashion week

Through LLCS, international students will have more opportunities to interact with domestic students, faculty and staff members outside classrooms,"says Shijuan Laurel Liu, assistant professor of Chinese and a partner with the Global Awareness LLC.In a Chinese New Year celebration associated with the LLC, for instance, students from her language and culture courses worked with Chinese students to introduce Chinese culture to the community

Solaja says coming from a different education system in Nigeria with sometimes unapproachable professors, she enjoyed LLC on-campus events like when she played board games with Waterloo professors and academic advisers.

3. Network for job opportunities: International students who plan to gain work experience in the country they study in can benefit from LLCS that are associated with campus departments and staff. This can provide them with chances to network and inquire about work opportunities.

Liu says when Chinese tutoring positions and graduate assistantships became available, she thought of international students from the Global Awareness LLC who previously helped her organize events. She also wrote reference letters for those students when they applied to graduate school.

Robert C.Demezzo, director of residence life at Southern Connecticut State University, says LLCS "help many intermational students secure employment on campus.

Solaja says her year living in Waterloo's Arts and Business LLC was one of her best decisions." You get what you put into the program," she says.

8.What impressed Solaja most in the LLC?

A.A group of students in the LLC rented a car to travel together

B.She got a reference letter when she applied to graduate school.

C.The peer leaders shared their experience both in study and daily life

D.They celebrate the Chinese New Year together with an assistant professor

9.Who are more likely to get Job opportunities?

A.Students who have participated in more on-campus events.

B.Students with better language skills especially in Chinese.

C.Students who have global awareness and interest in network.

D.Students with more working experience through LLCs.

10.Which of the following statements is FALSE?

A.Various activities help international students get oriented to the new life

B.Individuals with similar minds will have the same career prospect.

C.Each LLC focuses on a particular theme or academic interest area,

D.LLCS Provide opportunities of communicating with domestic students

11.Which of the following CANNOT be inferred from the passage?

A.The teachers in Nigeria seldom participate in off-campus activities

B.Many overseas students are not accustomed to the winter in Canada

C.The campus staff offer international students some academic support.

D.LLCS help many international students find jobs after graduation

D

Since the Second World War, there has been an obvious trend, especially among the growing group of college students, toward early marriage. Many youths begin dating in the first stages of adolescence, ''go steady'' through high school, and marry before their formal education has been completed. In some quarters, there is much shaking of graying heads over the ways of rebellious youth. However, emotional maturity does not grow with age; it does not arrive automatically at twenty-one or twenty-five. Some achieve it surprisingly early, while others never do, even in three-score years and ten.

Many students are marrying as an escape, not only from an unsatisfying home life, but also from their own personal problems of isolation and loneliness. However, any marriage entered into as an escape cannot prove entirely successful. The sad fact is that marriage seldom solves one's

problems; more often, it merely worsens them. Furthermore, it is doubtful whether the home is capable of carrying all that the young are seeking to put into it; one might say that they are abandoning one idol only to worship another. Young people correctly understand that their parents are wrong in believing that success is the ultimate good, but they themselves are wrong in believing that they have found the true center of life's meaning. Their expectations of marriage are essentially unrealistic and therefore incapable of fulfillment. They want too much, and tragic disillusionment (幻想破灭) is often bound to follow.

Shall we, then, join the chorus of those against early marriages? One cannot generalize: all early marriages are not bad any more than all later ones are good. Satisfactory marriages are determined not by how old one is, but by the emotional maturity of the partners. Therefore, each case must be judged on its own merits. If the early marriage is not an escape, if it is entered into with relatively few illusions or false expectations, and if it is economically practicable, why not? Good marriages can be made from sixteen to sixty, and so can bad ones.

12.From Para. 1 we can learn that .

A.emotional maturity automatically grow with age

B.some old people disapprove of early marriage

C.growing group of college students are against early marriage

D.the emotional expectations of young lovers are too high

13.The author's attitude to marriage as an escape is .

A.negative B.unsure

C.indifferent D.acceptable

14.It can be implied from the last paragraph that .

A.early marriages should not be encouraged

B.later marriages are always better than early marriages

C.each marriage should be looked at differently

D.young people can benefit a lot from early marriage

15.What's the best title of the passage?

A.Disillusionment in Marriage B.Expectations for Marriage

C.Marriages and Emotional Maturity D.The Trend of Early Marriages

第二节微.博橙.子辅导(共5小题;每小题2分,满分10分)

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

EmpathyLast year, researchers from the University of Michigan reported that empathy, the ability to understand other people, among college students had dropped sharply over the past 10 years.16.Today, people spend more time alone and are less likely to join groups and clubs.Jennifer Freed, a co-director of a teen program, has another explanation. Turn on the TV, and you’re showered with news and reality shows full of people fighting, competing, and generally treating one another with no respect.17.There are good reasons not to follow those bad examples. Humans are socially related by nature.18.Researchers have also found that empathetic teenagers are more likely to have high self-respect. Besides, empathy can be a cure for loneliness, sadness, anxiety, and fear.Empathy is also an indication of a good leader. In fact, Freed says, many top companies report that empathy is one of the most important things they look for in new managers.19.“Academics are important. But if you don’t have emotional (情感的) intelligence, you won’t be as successful in work or in your love life,” she says.What’s the best way to up your EQ (情商)? For starters, let down your guard and really listen to others.20.To really develop empathy, you’d better volunteer at a nursing home or a hospital, join a club or a team that has a diverse membership, have a “sharing circle” with your family, or spend time caring for pets at an animal shelter.

A.Everyone is different, and levels of empathy differ from person to person.

B.That could be because so many people have replaced face time with screen time, the researchers said.

C.“One doesn’t develop empathy by having a lot of opinions and doing a lot of talking,” Freed says. D.Humans learn by example—and most of the examples on it are anything but empathetic.

E. Empathy is a matter of learning how to understand someone else—both what they think and how they feel.

F. Good social skills—including empathy—are a kind of “emotional intelligence” that will help you succeed in many areas of life.

G. Having relationships with other people is an important part of being human—and having empathy is decisive to those relationships.

第二部分语言知识运用(共两节,满分45分)

第一节微.博橙子辅.导完形填空(共20小题;每小题1.5分,满分30分)

阅读下面短文,从短文后各题所给的A、B、C和D四个选项中,选出可以填入空白处的最佳选项。

Ring! Ring! Ring! It was early in the morning and I knew who was 21 as I reached for the telephone. I was a new substitute teacher (代课教师) trying to earn enough money to 22 my family. Each morning, I 23 for a call that would take me to a different classroom. The last three classes had all been determined to 24 me and see just how much bad behavior they could get away with (逃脱惩罚). I had responded (应对) by being 25 with the students. I didn't really 26 to go to work that morning, especially since it was my birthday.

Still, I answered the phone and 27 the job. My family needed the money and I couldn't 28 to be picky (挑剔的). As I was driving to work, I 29 to try harder to be the best teacher that I could be.

As the class started, the students 30 tried to see what they could get away with. This time, though, I was 31 but fair with them. I did my best to make my lessons 32 . I shared smiles, praised their efforts, and encouraged them to work hard.

The results were 33 . My unruly (难以驾驭的) classroom soon 34 . Students were learning and laughing, and I 35 felt like I was doing my job right. I went home feeling

36 in my heart and enjoyed the rest of my birthday with my family.

I remembered something that I once read: “Every day is a new opportunity to 37 again. Every day is your birthday.” Every day is a 38 for us to get things right, to live our lives with love and joy, and to make this world a better place. Don't 39 a single day. Just try to be the best you can be. Never stop 40 .

21.A.bothering B.calling C.knocking D.playing 22.A.pay B.impress C.support D.provide 23.A.waited B.asked C.looked D.headed 24.A.please B.test C.persuade D.surprise 25.A.patient B.honest C.satisfied D.angry 26.A.want B.need C.choose D.hesitate 27.A.refused B.received C.took D.completed 28.A.manage B.pretend C.expect D.afford

29.A.agreed B.decided C.appeared D.started

30.A.in time B.at last C.at once D.once again 31.A.strict B.worried C.mad D.disappointed 32.A.clear B.useful C.fun D.difficult 33.A.strange B.funny C.important D.amazing 34.A.changed B.divided C.returned D.disappeared 35.A.again B.even C.finally D.nearly 36.A.confused B.happy C.tired D.upset 37.A.check B.settle C.discover D.begin 38.A.chance B.choice C.risk D.goal 39.A.spend B.forget C.waste D.save 40.A.learning B.trying C.asking D.thinking

第二节(共10小题;每小题l5分,满分15分)

阅读下面材料,微.博橙子辅导在空白处填入1个适当的单词或括号内单词的正确形式。

Iceland shows off nature

Found just south of the Arctic Circle, it’s far from the northernmost country on Earth. But as a travel destinations, Iceland is on top of the world.

Known as? “the land of fire and ice”, the country has many natural wonders. As the Today website put it, “It is 41.nature choose Iceland to be its shop window to…remind humanity that nature is still the unstoppable force.”

As the world was reminded when the Eyjafjallajokull volcano erupted six years ago, Iceland is a country “still in the making, and few other places offer the same opportunities to see the earth 42.action, ” commented National Geographic magazine.

Ice is Iceland’s other big attraction-to be exact, the huge glaciers which travel toward the coast, 43.(make) strange pools of water. Even better are the northern lights, which are 44.(good) to see from October to March.

On Sept 28, the country’s capital Reykjavik decided to turn off all streetlights for an hour at night to give people a unique chance to enjoy the northern lights. Thanks to the glaciers and the dark sky, the bright, colourful 45.(dance) lights became “a heavenly light display”, travel guidebook publisher Lonely Planet noted.

And 46.Iceland’s unique natural features are the biggest attractions f or visitors, the country also offers inspiration. Iceland has 47.higher percentage of writers in its population than any other country in the world, the BBC reported. And it is not surprising 48.the country publishes more books per person than any other country in the world, reported the NPR radio station, Iceland 49.(be) the birthplace of important literary works and authors-from the Vikings’ Iceland sagas(传说) to author Halldór Laxness, winner of the 1955 Noble Prize in literature.

“The beast in Iceland, with its harsh(严酷的) nature and bitter, ever-changing weather. We cannot escape it,” Haraldur Jonsson, an Icelandic artists, told the Observer newspaper while describing his inspiration. “So we find ways to live with it. We 50.have a rich life to fill the empty spaces.”

第三部分写作(共两节,满分35分)

第一节短文改错(共10小题;每小题l分,满分10分)

假定英语课上老师要求同桌之间交换修改作文,请你修改你同桌写的以下作文。文中共有10处语言错误,每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。

增加:在缺词处加一个漏字符号(∧),并在其下面写出该加的词。

删除:把多余的词用斜线(\)划掉。

修改:微博橙子辅.导在错的词下划一横线,并在该词下面写出修改后的词。

注意:

1. 每处错误及其修改均仅限一词;

2. 只允许修改10处,多者(从第11处起)不计分。

On December 30,after two weeks’training,we finally began our work for volunteer guides in a museum.During the first two weeks,I learnt a lot about the story behind the artworks.In order to do good in the work,my teammates and I made fully preparations.We first worked out a careful plan.Then we practiced use proper body language to explain the artworks better.The month-long volunteer work has now come to end,from what I understand that it isn’t easy to be a good guide.Besides.I also real ize that how important teamwork is.I believed that I will get lifelong benefits from the short and meaningful experience.

第二节书面表达(满分25分)

假定你是高三学生李华。你的加拿大好友Peter发邮件说要来体验中国春节并询问你的寒

假计划。请给他回一封邮件,内容包括:

1. 复习弱势科目;

2. 到敬老院(the nursing home)参加志愿者活动;

3. 邀请他与你一起过春节。

注意:1. 词数100左右;

2. 可以适当增加细节,以使行文连贯。

英语参考答案(A卷)

【范文】

Dear Peter,

H ow’s everything?

You asked me in your last e-mail about how to spend my winter holiday. Here’s my plan.

First, with the college entrance examination around the corner,I’d like to take advantage of the time to go over my physics which I’m a little bit weak at. Second,as a volunteer of our school, I’m going to a nursing home to do voluntary work with other volunteers. We are going to make dumplings with the elderly and celebrate the Spring Festival together. You told me you would come to China to experience the Chinese Spring Festival, so you are warmly welcome to our hometown to enjoy the Festival with us. Best wishes.

Yours,

Li Hua

2018 北京高考英语真题(含答案)

2018年高考英语真题卷(北京卷) 一、单项填空 1.(2018?北京)—Hi, I'm Peter. Are you new here? I haven't seen you around?—Hello, Peter. I'm Bob. I just _________ on Monday. A. start B. have started C. started D. had started 2.(2018?北京)_________ we don't stop climate change, many animals and plants in the world will be gone. A.Although B.While C.If D.Until 3.(2018?北京)_________ along the old Silk Road is an interesting and rewarding experience. A. Travel B. Traveling C. Having traveled D. Traveled 4.(2018?北京)Susan had quit her well-paid job and _________ as a volunteer in the neighborhood when I visited her last year. A. is working B. was working C. has worked D. had worked 5.(2018?北京)She and her family bicycle to work, _________ helps them keep fit. A. which B. who C. as D. that 6.(2018?北京)During the Mid-Autumn Festival, family members often gather together _________ a meal, admire the moon and enjoy moon cakes. A. share B. to share C. having shared D. shared 7.(2018?北京)China's high-speed railways _________ from 9,000 to 25,000 kilometers in the past few years. A. are growing B. have grown C. will grow D. had grown 8.(2018?北京)In any unsafe situation, simply _________ the button and a highly-trained agent will get you the help you need. A.press B.to press

【4月重庆名校联盟二诊英语】2020年重庆市名校联盟康德卷高三“二诊”模拟英语试卷含答案解析(A卷)

试卷类型:A 重庆市名校联盟高2020级“二诊”模拟考试 英语 (考试时间:120分钟试卷满分:150分) 注意事项: 1.答卷前,考生务必将自己的姓名、准考证号填写在答题卡上。 2.回答选择题时,选出每小题答案后,用铅笔把答题卡上对应题目的答案标号涂黑。如需改动,用橡皮擦干净后,再选涂其他答案标号。回答非选择题时,将答案写在答题卡上,写在本试卷上无效。 3.考试结束后,将本试卷和答题卡一并交回。 第一部分阅读理解(共两节,满分40分) 第一节(共15小题;每小题2分,满分30分) 阅读下列短文,从每题所给的A、B、C和D四个选项中,选出最佳选项。 A Enjoy an amazing time in Lake Tahoe,CA with the fantastic show,Magic Fusion!This fantastic display features a variety of talented magicians who each take to the stage with their own flare,tricks,and illusions(视觉幻想)that will have the audiences who witness the show on the edge of their seats. Presented by the amazing Loft Theatre,this show has seen the likes of famous magicians such as Robert Hall and Chipper Lowell.Each evening stars a different magician as well,so you can enjoy a variety of talented performers all on the same stage.It is great for all ages,so you can bring the entire family along to be excited and out! entertained during this75-minute performance.You never know what you may see,so do not miss (英语)第1页共10页

重庆市三峡名校联盟2020-2021学年高一上学期12月联考化学试题

重庆市三峡名校联盟2020-2021学年高一上学期12 月联考化学试题 学校_________ 班级__________ 姓名__________ 学号__________ 一、单选题 1. 化学在人类生产生活中有着广泛的应用,下列说法不正确的是 A.烟花的五彩斑斓利用了焰色试验原 理 B.小苏打作食品蓬松剂 C.铁粉作食品袋内的脱氧剂D.超级钢和石灰石均属于合金 2. 分类是科学研究的重要方法,下列物质分类正确的是 A.电解质:碳酸钠、氯化铁、液氯B.碱性氧化物:过氧化钠、氧化钙、二氧化硫 C.同素异形体:C 60 、金刚石、石墨D.混合物:氯水、水银、磁性氧化铁 3. 下列说法正确的是 A.氧气的摩尔质量为32 B.气体摩尔体积就是22.4 C.阿伏伽德罗常数就是6.02×1023D.物质的量浓度的单位通常为mol·L-1 4. 在下列溶液中,一定能大量共存的离子组是 A.使紫色石蕊试液变红的溶液中:Na+、Fe2+、Cl-、SO B.加入金属铝有H 2 产生的溶液中:NH、NO、CO、Br-C.无色溶液中:Na+、Fe3+、Ca2+、I- D.滴入酚酞变红的溶液中:K+、Na+、Al3+、HCO A B C D

制备Fe(OH) 2比较NaHCO 3 和Na 2 CO 3 的 热稳定性 实验室制备 氯气 测定过氧化钠的纯 度 A.A B.B C.C D.D 6. 能正确表示下列反应的离子方程式的是 A.氯化铁刻蚀铜电路板:Fe3++Cu=Fe2++Cu2+ B.氯气溶于水:Cl 2+H 2 O=2H++Cl-+ClO- C.铝溶于氢氧化钠溶液:2Al+2OH-+2H 2O=2AlO+3H 2 ↑ D.Na 2O 2 溶于水:Na 2 O 2 +H 2 O=2Na++2OH-+O 2 ↑ 7. 工业上曾经通过反应“3Fe + 4NaOH Fe 3O 4 + 2H 2 ↑+4Na↑”生产金属 钠。下列说法正确的是 A.还原产物是钠Na和Fe 3O 4 B.用磁铁可以将Fe与Fe 3O 4 分离 C.将生成的气体在空气中冷却可获得钠 D.每生成1 mol H 2 ,该反应转移的电子数约为4×6.02×1023 选 项 实验实验操作或检验方法 A 向NaOH溶液中滴加饱和FeCl 3 溶 液制备胶体 用可见光束照射 B 配制100 mLl mol/L氯化钠溶液用托盘天平称5.85 g氯化钠配成100 mL溶液 C 鉴别碳酸氢钠溶液和盐酸用胶头滴管互相滴加 D 证明氯水中起漂白作用的不是Cl 2将干燥的氯气分别通入有色的干花和鲜花 A.A B.B C.C D.D 9. 下列括号中的物质为杂质,其中除去杂质的方法正确的是 A.NaHCO 3(Na 2 CO 3 ):加热法 B.Fe 2O 3 (Al 2 O 3 ):加入足量NaOH溶液,过滤 C.CO 2(HCl):通入饱和Na 2 CO 3 溶液洗气 D.FeCl 2(FeCl 3 ):加入足量Cu粉,过滤

全国名校联盟2018届高三联考试卷(六)文综地理试题

全国名校联盟2017-2018学年高三联考试卷(六) 文科综合试卷 第Ⅰ卷(选择题共140分) 本卷共35个小题,每小题4分,共140分,在每小题给出的四个选项中,只有一项是符合题目要求的,请将答案填涂在答题卡内。 张槎位于佛山市禅城区西部,拥有“中国针奴名镇”等称号。20世纪80年代初,广东的一针、二针、三针以及张槎的槎针等一批大型国有纺织企业纷纷集聚佛山,这些企业聚集了大量纺织工业人才,加上各大棉纺厂和数量众多的服装厂,为张槎针织的发展提供肥沃的土壤。近年来,随着佛山强中心规划出台,纺织产业逐渐向粤北和粤东地区转移,张搓针织企业的总部仍留在禅城而棉纱、织遭到染整等将外迁。据此完成下列问题。 1. 张槎针织产业快速发展的主要原因是() A. 劳动力充足 B. 产业基础雄厚 C. 国家政策支持 D. 原料充足 2. 张槎针织部分产业链向外地转移的主要原因可能是() A. 产业升级转型 B. 市场需求量减少 C. 生产成本降低 D. 企业恶性竞争加剧【答案】1. B 2. A 【解析】 1. 由材料可知,佛山张槎20世纪80年代初,广东的一针、二针、三针以及张槎的槎针等一批大型国有纺织企业纷纷集聚佛山,这些企业聚集了大量纺织工业人才,加上各大棉纺厂和数量众多的服装厂,为张槎针织的发展提供肥沃的土壤。因纺织产业起步早,纺织工业基础条件好,致使其快速发展,故选B。 2. 随着经济的发展,珠江三角洲地区原有的劳动力和土地价格不具备优势,致使产业转移升级,纺织产业部分产业链向劳动力价格和土地成本低的地区转移。导致产业转移的主要原因为产业升级的需求,故选A。 【方法总结】从本质上讲,企业生产为了降低成本、扩大销售市场、追求更高的利润而进行产业转移。影响国际产业转移的因素很多,其中,劳动力、内部交易成本、市场是影响国际产业转移的三个主要因素。产业转移可促进区域产业结构调整,发达国家或地区,原主导产业向国外转移,可使国内的生产要素集中到新的主导产业,为产业结构顺利调整创造了条件。

北京高考英语试题及答案

绝密★启用前 2016年普通高等学校全国统一考试(北京卷) 英语 本试卷共16页,共150分。考试时间为120分钟。考生务必将答案答在答题卡上,在试卷上作答无效。考试结束后,将本试卷和答题卡一并交回。 第一部分:听力理解(共三节:30 分) 第一节(共5 小题;每小题分,共分) 听下面5段对话。每段对话后有一道小题,从每题所给的A、B、C三个选项中选出最佳选项。听完每段对话后,你将有10秒钟的时间来回答有关小题和阅读下一小题,每段对话你将听一遍。 does the man want to borrow pencil. eraser. pen. is the woman doing now / . home. group study. does the man have for earthquake preparation candle. radio. flashlight. does the conversation most probably take place a bank. B. In a hotel. a store. will the man go for his holiday . . . 第二节(共10小题;每小题分,共15分) 听下面4段对话或独白。每段对话或独白后有几道小题,从每题所给的A、B、C三个选项中选出最佳选项。听每段对话或独白前,你将有5秒钟的时间阅读每小题。听完后,每小题将给出5秒钟的作答时间。每段对话或独白你将听两遍。 听第6段材料,回答第6至7题。 , does the supermarket close on Sundays 5:00 pm. 7:00 pm. C. At 8:00 pm.

重庆市名校联盟2020届高三“二诊”模拟英语试题(有答案)

重庆市名校联盟2020届高三“二诊”模拟 英语试题(A卷) (考试时间:120分钟试卷满分:150分) 注意事项: 1. 答卷前,考生务必将自己的姓名、准考证号填写在答题卡上。 2. 回答选择题时,选出每小题答案后,用铅笔把答题卡上对应题目的答案标号涂黑。如需改动,用橡皮擦干净后,再选涂其他答案标号。回答非选择题时,将答案写在答题卡上,写在本试卷上无效。 3. 考试结束后,将本试卷和答题卡一并交回。 第一部分阅读理解(共两节,满分40分) 第一节(共15小题;每小题2分,满分30分) 阅读下列短文,从每题所给的A、B、C和D四个选项中,选出最佳选项。 A Enjoy an amazing time in Lake Tahoe, CA with the fantastic show, Magic Fusion! This fantastic display features a variety of talented magicians who each take to the stage with their own flare, tricks, and illusions(视觉幻想) that will have the audiences who witness the show on the edge of their seats. Presented by the amazing Loft Theatre, this show has seen the likes of famous magicians such as Robert Hall and Chipper Lowell. Each evening stars a different magician as well, so you can enjoy a variety of talented performers all on the same stage. It is great for all ages, so you can bring the entire family along to be excited and entertained during this 75-minute performance. You never know what you may see, so do not miss out! The Loft Theatre is Lake Tahoe’s premier place for entertainment and delicious food. Not only is it home to

【附加15套高考模拟试卷】重庆市三峡名校联盟2020届高三5月联考数学(文)试题含答案

重庆市三峡名校联盟2020届高三5月联考数学(文)试题 一、选择题:本题共12小题,每小题5分,共60分。在每小题给出的四个选项中,只有一项是符合题目要求的。 1.已知函数()() ()2 2sin 11f x x x x x =--++在区间[]1,3-的最大值为M ,最小值为m ,则M m += A .4 B .2 C .1 D .0 2.若直线220(0,0)ax by a b -+=>>被圆222410x y x y ++-+=截得弦长为4,则41 a b +的最小值是( ) A .9 B .4 C .12 D .14 3.已知集合1 {|24}{|0}3x A x N x B x x +=∈-≤=≥-<,,则集合A ∩B 中子集的个数是( ) A .4 B .8 C .16 D .32 4.已知实轴长为22的双曲线C :22 221(0)x y a b a b -=>>的左、右焦点分别为F 1(﹣2,0),F 2(2,0), 点B 为双曲线C 虚轴上的一个端点,则△BF 1F 2的重心到双曲线C 的渐近线的距离为( ) A .13 B .2 C .3 D .2 3 5.已知集合{}{}1,0,1,|1A B x N x =-=∈<,则A B =U ( ) A . {}0 B .{}1,0- C .{1,-0,1} D . (),1-∞ 6.4张卡片上分别写有数字1,2,3,4,从这4张卡片中随机抽取2张,则取出的2张卡片上的数学之和为偶数的概率是( ) A .12 B .13 C .2 3 D .34 7.如图, 一个四棱锥的底面为正方形,其三视图如图所示,则这个四棱锥的体积为( ) A .1 B .2 C .3 D .4

重庆市名校联盟2020届高三“二诊”模拟英语试题(A卷)+Word版含答案

试卷类型:A 重庆市名校联盟高2020级“二诊”模拟考试 英语 (考试时间:120分钟试卷满分:150分) 注意事项: 1. 答卷前,考生务必将自己的姓名、准考证号填写在答题卡上。 2. 回答选择题时,选出每小题答案后,用铅笔把答题卡上对应题目的答案标号涂黑。如需改动,用橡皮擦干净后,再选涂其他答案标号。回答非选择题时,将答案写在答题卡上,写在本试卷上无效。 3. 考试结束后,将本试卷和答题卡一并交回。 第一部分阅读理解(共两节,满分40分) 第一节(共15小题;每小题2分,满分30分) 阅读下列短文,从每题所给的A、B、C和D四个选项中,选出最佳选项。 A Enjoy an amazing time in Lake Tahoe, CA with the fantastic show, Magic Fusion! This fantastic display features a variety of talented magicians who each take to the stage with their own flare, tricks, and illusions(视觉幻想) that will have the audiences who witness the show on the edge of their seats. Presented by the amazing Loft Theatre, this show has seen the likes of famous magicians such as Robert Hall and Chipper Lowell. Each evening stars a different magician as well, so you can enjoy a variety of talented performers all on the same stage. It is great for all ages, so you can bring the entire family along to be excited and entertained during this 75-minute performance. You never know what you may see, so do not miss out! The Loft Theatre is Lake Tahoe’s premier place for entertainment and delicious food. Not only is it home to amazing shows that will entertain and thrill, but it is also home to a dining experience that serves up some mouthwatering meals. Before your show, be sure to grab a bite to eat before

2020届全国名校联盟新高考押题信息考试(十)历史试卷

2020届全国名校联盟新高考押题信息考试(十) 历史 ★祝考试顺利★ 注意事项: 1、考试范围:高考范围。 2、试题卷启封下发后,如果试题卷有缺页、漏印、重印、损坏或者个别字句印刷模糊不清等情况,应当立马报告监考老师,否则一切后果自负。 3、答题卡启封下发后,如果发现答题卡上出现字迹模糊、行列歪斜或缺印等现象,应当马上报告监考老师,否则一切后果自负。 4、答题前,请先将自己的姓名、准考证号用0.5毫米黑色签字笔填写在试题卷和答题卡上的相应位置,并将准考证号条形码粘贴在答题卡上的指定位置。用2B铅笔将答题卡上试卷类型A后的方框涂黑。 5、选择题的作答:每个小题选出答案后,用2B铅笔把答题卡上对应题目的答案标号涂黑。写在试题卷、草稿纸和答题卡上的非选择题答题区域的答案一律无效。 6、主观题的作答:用签字笔直接答在答题卡上对应的答题区域内。写在试题卷、草稿纸和答题卡上的非答题区域的答案一律无效。如需改动,先划掉原来的答案,然后再写上新答案;不准使用铅笔和涂改液。不按以上要求作答无效。 7、保持答题卡卡面清洁,不折叠,不破损,不得使用涂改液、胶带纸、修正带等。 8、考试结束后,请将本试题卷、答题卡、草稿纸一并依序排列上交。 一、单选题(本大题共12小题,共48分) 1.近年来,民族品牌361度异军突起,如图是361度的标志和广告词。下列叙述正确的是 ①一千多年前的宋代,我国发明的雕版印刷术、指南针和火药处于世界领先地位 ②一百年前,我国科技一度落后的原因是社会制度的落后和西方列强的侵略 ③新中国成立仅20年,“两弹一星”就为我国科技的再度起飞奠定了基础 ④“以科技创新推进经济转型”的科学发展观加快了我国科技和经济再度起飞的进程 A. ③④ B. ②④

最新北京高考英语试题及答案

2013 年北京高考英语试题 第一部分:听力理解(共三节,30 分) 第一节(共5 小题;每小题1.5 分,共7.5 分) 听下面5 段对话,每段对话后有一道小题,从每题所给的A、B、C 三个选项中选出最佳选项,听完每段对话后,你将有10 秒钟的时间来回答有关小题和阅读下一小题。 例:What is the man going to rend? A. A newspaper B. A magazine C. A book 答案是A 1. What room does the man want? A. Sinple B. Double C. Twin 2. What will the man buy? A. Vegetables B. Meat C. Bread 3. What does the man plan to do? A. Go fishing B. Go jogging C. Go camping 4. How much is the change? A. $8 B. $ 42 C. $50 5. What’s the weather like this afternoon? 第二节(共10 小题;每小题1.5 分,共15 分) 听下面4 段对话或独白。每段对话或独白后有几道小题,从每题所给的A、B、C 三个选项中选出最佳选项。听每段对话或独白前,你将有5 秒钟的时间阅读每小题。听完后,每小题将给出5 秒钟的作答时间。每段对话或独白你将听两遍。 听第6 段材料,回答第6 至7 题。 6. When will the woman go to see the movie? A. Friday. B. Saturday C. Sunday 7. Where will the woman sit for the movie? A. In the front. B. In the middle C. At the back 听第7 段材料,回答第8 至9 题。 8. When will the two speakers meet? A. On the 13th B. On the 14th C. On the 15th 9. What is the man doing? A. Persuading the woman to accept his suggestion. B. Making an apology to the woman. C. Inviting the woman to lunch. 听第8 段材料,回答第10 至12 题。 10. Where are the two speakers? A. In the library. B. In the café. C. In the classroom

重庆名校联盟2020年九年级语文第一次月考卷及答案

《重庆名校联盟月考卷》2020年(上)语文(人教)第一次试题 (全卷共四个大题,满分150分考试时间:120分钟) 一、语文知识及运用(30分) 1.下列句子加点字注音正确的一项是()(3分) A. 蓑.衣(shuō)麦穗.(suì)禁锢.(gù)弥.留之际(meí) B. 凝.望(líng)灵柩.(jiù)陨.落(yǔn) 廓.然无累(guò) C. 栖.息(xī)旁骛.(wù)田圃.(bǔ)不屈不挠.(náo) D. 强聒.(guō)亵.渎(xiè)谀.词(yú)气吞斗.牛(dǒu) 2.找出下列词语没有错别字的一项()(3分) A.风骚渲嚷留滞孤军奋战 B.陵驾凭调忐忑自知之明 C.嬉闹灵柩谀词脑羞成怒 D.沉吟陨落田圃断章取义 3.下列句子中加点词语运用不恰当的一项是()(3分) A.有这种诗人灵魂的传统民族,应该有气吞斗牛 ....的表现才行。 B.“勤学好问”是提高学习成绩的不二法门 ....。 C.上帝在创造世界时,把一切生物分散安置并教会他们传宗接代 ....,繁衍自己的 子孙。 D.你客观地分析前因后果,做将来的借鉴,重蹈覆辙 ....,将来一定会取得更大的 成就。 4.下列文句的空缺处,依次填入的词语恰当 ..的一组是()(3分) ①人要善于把握自我,一个人到世界上去奋斗,去追求,也许_______,也许败 归。 ②随着传播技术的进步,人们________感情的方式越来越方便,但传播内容的雷 同也会给传播双方带来厌倦感。 ③我们要处理好放开收购市场与保证国家粮食安全的关系,________保护好耕 地,不断提高粮食综合生产能力。 A.凯旋传达确实 B.胜利传递确实 C.胜利传达切实 D.凯旋传递切实 5.填到空缺处与上下文衔接较好的一项是()(3分) 列宁说:“语言是人类最重要的交际工具。”这一科学论断深刻地阐明了语言 的社会本质和重要作用。人们利用语言来进行交际,交流思想,__ __,如果没有语言,社会便会停止生产,便会崩溃。 A.以便协调共同的活动,互相了解,组织社会的生产

2017届重庆市三峡名校联盟高三联考文科数学试题及答案

重庆市三峡名校联盟2017届高三联考数学文试题 说明:本试卷满分150分,考试时间120分钟 第Ⅰ卷(选择题,50分) 一、选择题:本大题共10小题,每小题5分,共50分.在每小题给出的四个选项中,只有一项是符合题目要求的. 1、设全集{} 1,2,3,4,5I =, 集合{} A=2,3,5, 集合{}1,2B =,则()I C B A 为 A 、{}2 ; B 、{}3,5 ; C 、{}1,3,4,5; D 、{}3,4,5; 2、命题“对任意x R ∈,都有20ax bx c ++<” 的否定为 A 、存在0x R ∈,使得2000ax bx c ++≥; B 、不存在x R ∈,使得2 0ax bx c ++≥; C 、存在0x R ∈,使得2000ax bx c ++<; D 、对任意x R ∈,都有 20ax bx c ++≥; 3、函数y = 的定义域为 A 、(2,3)(3,)+∞ ; B 、(2,)+∞; C 、(3,)+∞; D 、(2,5)(5,)+∞ ; 4、“1sin 2θ= ”是“2()6 k k z π θπ=+∈”的 A 、 充分不必要条件; B 、 必要不充分条件; C 、 充要条件; D 、 既不充分也不必要条件; 5、要得到函数y= sinx 的图象,只需将函数cos()6 y x π =-的图象 A 、向右平移 6π个单位; B 、向右平移3π 个单位C 、向左平移3π个单位 ; D 、向左平移6 π 个单位; 6、右图给出的是计算1111 1352013 ++++ 的值的一个程 序框图,则判断框内应填入的条件是 A .i ≥2013? ; B .1007i ≤? C .2013i <? ; D .1007i >?; 7、已知x,y 满足约束条件0 10220 x y x y x y -≤?? +-≥??-+≥? ,则12z x y =+的

2018-北京高考英语真题(含答案)

2018-北京高考英语真题(含答案)

2018年高考英语真题卷(北京卷) 一、单项填空 1.(2018?北京)—Hi, I'm Peter. Are you new here? I haven't seen you around?—Hello, Peter. I'm Bob. I just _________ on Monday. A. start B. have started C. started D. had started 2.(2018?北京)_________ we don't stop climate change, many animals and plants in the world will be gone. A.Although B.While C.If D.Until 3.(2018?北京)_________ along the old Silk Road is an interesting and rewarding experience. A. Travel B. Traveling C. Having traveled D. Traveled 4.(2018?北京)Susan had quit her well-paid job and _________ as a volunteer in the neighborhood when I visited her last year. A. is working B. was working C. has worked D. had worked 5.(2018?北京)She and her family bicycle to work, _________ helps them keep fit. A. which B. who C. as D. tha t 6.(2018?北京)During the Mid-Autumn Festival, family members often gather together _________ a meal, admire the moon and enjoy moon cakes. A. share B. to share C. having shared D. shared 7.(2018?北京)China's high-speed railways _________ from 9,000 to 25,000 kilometers in the past few years.

2020-2021学年重庆市三峡名校联盟高二上学期12月联考数学试题 word版

重庆市三峡名校联盟2020-2021学年高二上学期12月联考数学试题 本试卷共4页,满分150分,考试时间120分钟。 注意事项: 1.答题前,考生务必在试题卷、答题卡规定的地方填写自己的准考证号、姓名。 2.回答选择题时,选出每小题答案后,用2B 铅笔把答题卡上对应题目的答案标号涂黑。如需改动,用橡皮擦干净后,再选涂其它答案标号。回答非选择题时,将答案写在答题卡上。写在本试卷上无效。 一、单项选择题:本大题共8小题,每小题5分,共40分.在每小题给出的四个选项中,只有一项是符合题目要求的.。 1.已知集合{}{} =2,1,0,1,2,=|21A B x R y x --∈=- ,则A B ?=( ) A .{}0,1 B .{}0,1,2 C .{}1,2 D .{}1 2.斜率为2,且过直线4y x =-和直线2y x =+交点的直线方程为( ) A .22y x =- B .21y x =- C .21y x =+ D .22y x =+ 3.设0a b <<,则下列不等式中不.成立的是( ) A . 11a b a >- B .11 a b > C .a b >- D .a b ->- 4.在ABC ?中,AD 为BC 边上的中线,E 为AD 的中点,则BE =( ) A .3144A B A C - B .1344AC AB - C .3144AB AC + D .1344 AB AC + 5.函数()x x e e f x x --=的图象大致是( ) 6.若直线1:220l ax y +-=与直线()()2 2:110l x a y a +-++=平行,则a 的值为( ) A .1a =- B .2a = C .21a a =-=或 D .21a a ==-或 7.张衡(78年~139年)是中国东汉时期伟大的天文学家、文学家、数学家。他的数学著作有《算罔论》,他曾经得出结论:圆周率的平方除以十六等于八分之五。已知正方体的外接球与内切球上各有一个动点A ,B ,若线段AB 31 -,利用张衡的结论可得该正方体的外接球的表面积为( ) A .9 B .9.42 C 3 104 D .310 8.设椭圆()22 2210x y a b a b +=>>的左、右焦点分别为12,F F ,P 是椭圆上一点, ()1212,13,2 PF PF F PF π λλ=≤≤∠= ,则椭圆离心率的取值范围为( ) A .2? ?? ? B .25?????? C .210?????? D .10????????

2020年北京市高考英语试卷

2020年北京市高考英语试卷 一、用单词的适当形式完成短文 1. 阅读下列短文,根据短文内容填空。在未给提示词的空白处仅填写1个适当的单词,在给出提示词的空白处用括号内所给词的正确形式填空。 Oliver is a host of a TV programme on food. He says food 【小题1】(play) a big role in his life. "My mum was a great cook, and she'd sometimes let me have a try," he said. The first dish Oliver prepared for his family was fried chicken wings. He made it with his mum's help. Oliver says if you're【小题2】(luck) enough to have someone close to you who enjoys cooking, ask them【小题3】you can join in when it's possible. 2. 阅读下列短文,根据短文内容填空。在未给提示词的空白处仅填写1个适当的单词,在给出提示词的空白处用括号内所给词的正确形式填空。 Single-use plastic bags are used at most a few times before they 【小题1】(throw) away. It takes them hundreds of years【小题2】(break) down. Man y of these bags end up in the ocean where larger ones can trop sea creatures, such as turtles and dolphins. Over time, the bags fall apart【小题3】countless t iny pieces, and fish can accidentally eat some of them. Now, lots of【小题4】(country) and regions are taking action to ban the sale of such bags to stop people using them. 3. 阅读下列短文,根据短文内容填空。在未给提示词的空白处仅填写1个适当的单词,在给出提示词的空白处用括号内所给词的正确形式填空。 A piece of stone【小题1】(find) on a Dutch beach suggests that our extinct human relatives, known as Neanderthals, were cleverer than previously thought. The Neanderthals【小题2】(live)alongside human ancestors in Europe for tens of thousands of years, before dying out about 40, 000 years ago. They were much stronger than modern humans, but it's long been assumed that human ancestors were 【小题3】(smart)than the Neanderthals. However, the stone tool made by Neanderthals suggests otherwise. 二、完形填空添加题型下试题 4.My faith in human nature has never been so great as it was last weekend after our family get-together in the town of Vail. On Saturday, we all went to the market right in the middle of the town. Near the end, we all_________at the fountain near the bridge, and the kids wad ed (蹚水)around in the fountain until we_________. This is one of the busiest walking streets. After we returned to the hotel late in the afternoon, my 7-year-old son Ponder_________that nowhere could he find his backpack, which_________his Gameboy and his watch. After a thorough_________we determined that he must have left it at the fountain. Ponder has never_________anything. So we just take for granted that he needs no supervision (指导)for managing his_________. He was upset, not about the Game boy, but about the watch. "But Dad," he said, through massive_________, "they don't make that kind of watch anymore." We were all very_________. Our dinner reservation was at a restaurant just on the other side of the bridge, so I__________him that we would not only search the area around the fountain when we went back for dinner, but we would also find the police and ask them if the backpack had been__________.

重庆名校联盟2020届春季联考全科试题及答案--数学试题

高2020级【文科数学试题】·第1页(共2页) 1 是 =2x y =x +2y x 秘密★启用前 重庆市名校联盟2019~2020学年度第二次联合考试 文科数学试题(高2020级) 【命题:永川中学 赵永正 审题 永川中学 盘如春】 (本试卷共2页,总分150分,考试时间120分钟) 注意事项: 1.答题前,考生先将自己的姓名、准考证号码填写清楚,并认真核对条形码上的姓名、准考证号、座位号及科类名称。 2.请将准考证条形码粘贴在右侧的[考生条形码粘贴处]的方框内。 3.选择题必须使用2B 铅笔填涂;非选择题必须用0.5毫米黑色字迹的签字笔填写,字体工整、笔迹清楚。 4.请按题号顺序在各题的答题区域内作答,超出答题区域书写的答案无效,在草稿纸、试题卷上答题 无效。 5.保持答题卡面清洁,不要折叠、不要弄破、弄皱,不准使用涂改液、刮纸刀。 第Ⅰ卷(选择题60分) 一、选择题:本题共12小题,每小题5分,共60分.在每小题给出的四个选项中,只有 一项是符合题目要求的. 1. 已知集合},1,0,1,3{},2,1,0,1,2{--=--=B A 则A B =I A.}2,1,0,1,2,3{--- B.}1,0,1{- C.}2,1,0,1{- D.}23|{≤≤-x x 2.复数=+i i 1 A.i -1 B.i +1 C.i --1 D.i +-1 3.已知13 2211log 3,,log ,23a b c ??=== ??? 则c b a ,,的大小关系为 A.c b a >> B.c a b >> C.b c a >> D.a c b >> 4.利用系统抽样法从编号分别为1,2,3,..,80的80件不同产品中抽出一个容量为16的样 本,如果抽出的产品中有一件产品的编号为13,则抽出的产品的最大编号为 A.73 B.76 C.78 D.77 5. 函数)1()(2-=x x x f 的大致图象为 A B C D 6. 已知1cos 0,22 π αα=-<<, 则cos 3πα??- ???的值是 A. 21 B.32 C.2 1 - D.1 7. 若,,2||,1||b a c b a ρρρρρ+===且,a c ρρ⊥则向量a ρ与b ρ 的夹角为 A.30o B.60o C.120o D.150o 8. 若执行右侧的程序框图,当输入的x 的值为4时,输出 的y 的值为2,则空白判断框中的条件可能为 A .3x > B .4x > C .4x ≤ D .5x ≤ 9. 设直线l 过双曲线C 的一个焦点,且与C 的一条对称轴 垂直,l 与C 交于点B A ,两点,||AB 为C 的实轴长的2倍, 则C 的离心率为 A.2 B.3 C.2 D.3 10. 在ABC ?中,c b a ,,分别是角C B A ,,的对边,,21 cos =B 且,2=+c a 则边长b 的最小值为 A.4 B.3 C.2 D.1 11. 已知函数)(x f 的定义域为.R 当0x 时,11.22f x f x ????+=- ? ?????则=)6(f A.-2 B.2 C.0 D.-1 12. 过点)0,2(-M 的直线m 与椭圆1222 =+y x 交于,,21P P 线段21P P 的中点为,P 设直线m 的 斜率为),0(11≠k k 直线OP 的斜率为,2k 则21k k 的值为 A.2 B.2- C.21 D.21 - 第Ⅱ卷(非选择题90分) 二、填空题(每小题5分,4个小题共20分) 13. 曲线x x y 22+=在点(1,3)处的切线的斜率为____. 14. 设n S 为等比数列}{n a 的前n 项和,且,0852=+a a 则.___2 3=S S 15. 若函数,2 1 cos sin sin )(2-+=x x x x f 则)(x f 的最大值为_____. 16. 已知三棱锥ABC P -的所有棱长都相等,现沿PC PB PA ,,三条侧棱剪开,将其表面展 成一个平面图形,若这个平面图形外接圆的半径为,62则三棱锥ABC P -的内切球的表面 积为_____.

相关文档
最新文档