2018高考英语全国卷1试题及答案-word精校版word版本
2018年高考英语全国卷1试题及答案
第一部分听力（共两节，满分30）
做题时，先将答案标在试卷上。录音内容结朿后，你将有两分钟的时间将试卷上的答案转涂到答题卡上。
笫一节（共5小题：每小题1.5分，满分7.5分）
听下面5段对话。每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项。听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。毎段对话仅读一遍。
例: How much is the shirt? A. ￡19.15. B.￡9.18. C. ￡9.15.
1. What will James do tomorrow?
A. Watch a TV program.
B. Give a talk.
C. Write a report.
2. What can we say about the woman?
A. She’s generous.
B. She's curious.
C. She's helpful.
3. When does the train leave?
A. At 6:30.
B. At 8:30.
C. At 10:30.
4. How does the woman go to work?
A. By car.
B. On foot.
C. By bike.
5. What is the probable relationship between the speakers?
A. Classmates.
B. Teacher and student.
C. Doctor and patient.
第二节（共15小题：每小題1.5分，满分22.5分）
听下面5段对话或独白，每段对话或独白后有几个小题，从题中所给的A、B、C三个选项中选出最佳选项，听每段对话或独白前，你将有时间阅读各个小题，每小题5秒钟：听完后，各小题将给出5秒钟的作答时间。每段对话或独白读两遍。
听第6段材枓，回答第6、7题。
What does the woman regret?
A. Giving up her research.
B. Dropping out of college.
C. Changing her major.
7. What is the woman interested in studying now? A. Ecology. B. Education.
听第7段材料，回答第8、9题。
8. What is the man?
A. A hotel manager.
B. A tour guide.
C. A taxi driver
9. What is the man doing for the woman?
A. Looking for some
B. Showing her around the Seaside.
C. Offering information about a hotel.
听第8段材枓，问答第10至12题。
10. Where docs the conversation probably take place?
A. In an office.
B. Ai home.
C. At a restaurant.
11. What will the speakers do tomorrow evening?
A. Go to a concert.
B. Visit a friend.
C. Work extra hours.
12. Who is Alice going to call?
A. Mike.
B. Joan.
C. Catherine.
听第9段材料，回答第13至16題。
13. Why does the woman meet the man?
A. To look at an apartment.
B. To deliver some furniture.
C. To have a meal together.
14. What does the woman like about the carpet?
A. Its color.
B. Its design.
C. Its quality.
15. What does the man say about the kitchen?
A. It's a good size.
B. It's newly painted.
C. It‘s adequately equipped.
16. What will the woman probably do next?
A. Go downtown.
B. Talk with her friend.
C. Make payment.
听第10段材料，回答第17至20 题。
17. Who is the speaker probably talking to?
A. Movie fans.
B. News reporters.
C. College students.
18. Where does the speaker take English classes?
A. Before he left his hometown.
B. After he came to America.
C. When he was 15 years old.
19. How docs the speaker feel about his teacher?
A. He's proud.
B. He's sympathetic.
C. He’s grateful.
20. What does the speaker main talk about?
A. How education shaped his life.
B. How his language skills improved.
C. How he managed his business well.
第二部分阅读理解（共两节，满分40分）
第一节(共15小題：每小题2分，满分36分）
阅读下列短文，从所给的A. B. C和D四个选项中，选出最佳选项.
A
Washington, D.C. Bicycle Tours
Cherry Blossom Bike Tour in Washington, D.C.
Duration: 3 hours
This small group bike tour is a fantastic way to see the world-famous cherry trees with beautiful flowers of Washington, D.C. Your guide will provide a history lesson about the trees and the famous monuments where they blossom. Reserve your spot before availability - and the cherry blossoms - disappear!
Washington Capita! Monuments Bicycle Tour Duration: 3 hours (4 miles)
Join a guided bike tour and view some of the most popular monuments in Washington, D.C. Explore the monuments and memorials on the National Mall as your guide shares unique facts and history at each stop. Guided tour includes bike, helmet, cookies and bottled water.
Capital City Bike Tour in Washington, D.C.
Duration: 3 hours
Morning or Afternoon, this bike tour is the perfect tour for D.C. newcomers and locals looking to experience Washington, D.C. in a healthy way with minimum effort. Knowledgeable guides will entertain you with the most interesting stories about Presidents. Congress, memorials, and parks. Comfortable bikes and a smooth lour route {路线} make cycling between the sites fun and relaxing.
Washington Capital Sites at Night Bicycle Tour
Duration: 3 hours (7 miles)
Join a small group bike lour for an evening of exploration in the heart of Washington, D.C. Get up close to (he monuments and memorials as you bike the sites of Capitol Hill and the National Mall.
Frequent slops are made for photo taking as your guide offers unique (acts and history. Tour includes bike, helmet, and bottled water. All riders are equipped with reflective vests and safety lights.
21. Which tour do you need to book in advance?
A. Cherry Blossom Bike Tour in Washington, D.C.
B. Washington Capital Monuments Bicycle Tour.
C. Capital City Bike Tour in Washington.
D.C.
D. Washington Capital Sites at Night Bicycle Tour.
22. What will you do on the Capital City Bike Tour?
A. Meet famous people.
B. Go to a national park.
C. Visit well-known museums.
D. enjoy interesting stories.
23. Which of the following does the bicycle tour at night provide?
A. City maps.
B. Cameras.
C. Meals.
D. Safety lights.
B
Good Morning Britain's Susanna Reid is used to grilling guests on the sofa every morning, but she is cooking up a storm in her latest role - showing families how to prepare delicious and nutritious meals on a tight budget.
In Save Money: Good Food, she visits a different home each week and with the help of chef Matt Tebbutt offers lop tips on how to reduce food waste, while preparing recipes for under ￡5 per family a day. And the Good Morning Britain presenter says she’s bee n able to put a lot of what she's learnt into practice in her own home, preparing meals for sons, Sam，14，Finn, 13，and Jack, 11.
“We love Mexican churros, so I buy them on my phone from my local Mexican takeaway restaurant,,，she explains. “I pay ￡5 for a portion (―份)，but Matt makes them for 26p a portion, because they arc flour, water, sugar and oil. Everybody can buy takeaway food; but sometimes
we're not aware how cheaply we can make this food ourselves.”
The eight-part series (系列节目), Save Money: Good Foods follows in the footsteps of ITV's Save Monty: Good Health, which gave viewers advice on how to gel value from the vast range of health products on the market.
With food our biggest weekly household expense, Susanna and Malt spend time with a different family eac h week. In tonight’s Easter special they come to the aid of a family in need of some delicious inspiration on a budget. The team transforms the family's long weekend of celebration with less expensive but still tasty recipes.
24. What do we know about Susanna Reid?
A. She enjoys embarrassing her guests.
B. She has started a new programme.
C. She dislikes working early in the morning.
D. She has had a tight budget for her family.
25. How docs Matt Tebbutt help Susanna?
A. He buys cooking materials for her.
B. He prepares food for her kids.
C. He assists her in cooking matters.
D. He invites guest families for her.
26. What does the author intend to do in paragraph 4?
A. Summarize the previous paragraph.
B. Provide some advice for the readers.
C. Add some background information.
D. Introduce a new topic for discussion.
27. What can be a suitable title for the text?
A. Keeping Fit by Eating Smart
B. Balancing Our Daily Diet
C. Making Yourself a Perfect Chef
D. Cooking Well for Less
C
Languages have been coining and going for thousands of years, but in recent times there has been less coming and a lot more going. When the world was still populated by hunter-gatherers, small, tightly knit {联系）groups developed their own patterns of speech independent of each other. Some language experts believe that 10,000 years ago, when the world had just five to ten million people, they spoke perhaps 12,000 languages between them.
Soon afterwards，many of those people started settling down to become farmers, and their languages too became more settled and fewer in number. In recent centuries, trade, industrialization, the development of the nation-state and the spread of universal compulsory education, especially globalization and better communications in the past few decades, all have caused many languages to disappear, and dominant languages such as English. Spanish and Chinese arc increasingly taking over.
At present, the world has about 6,800 languages. The distribution of these languages is hugely uneven. The general rule is that mild zones have relatively few languages, often spoken by many people, while hot, wet zones have lots, often spoken by small numbers. Europe has only around 200 languages; the Americas about 1.000; Africa 2,400: and Asia and the Pacific perhaps 3,200, of which Papua New Guinea alone accounts for well over 800. The median number (中位数} of speakers is a mere 6.000, which means that half the world's languages are spoken by fewer people than that.
Already well over 400 of the total of 6,800 languages arc close to extinction (消亡)，with only a few elderly speakers left. Pick, at random, Busuu in Cameroon (eight remaining speakers), Chiapaneco in Mexico (150), Lipan Apache in (he United States (two or three) or Wadjigu in Australia (one. with a question-mark): none of these seems to have nuich chance of survival.
28. What can we infer about languages in hunter-gatherer times?
A. They developed very fast.
B. They were large in number.
C. They had similar patterns.
D. They were closely connected.
29. Which of the following best explains “dominant”underlined in paragraph 2?
A. Complex.
B. Advanced.
C. Powerful.
D. Modem.
30. How many languages arc spoken by less than 6,000 people a( present?
A. About 6,800.
B. About 3,400.
C. About 2,400.
D. About 1,200.
31. What is the main idea of the text?
A. New languages will be created.
B. People's lifestyles arc reflected in languages.
C. Human development results in fewer languages.
D. Geography determines language evolution.
D
We may think we're a culture that gets rid of our worn technology at the first sight of something shiny and new. but a new study shows that we keep using our old devices (装置) well after they go out of style. That's bad news for the environment —and our wallets - as these outdated devices consume much more energy than the newer ones that do the same things.
To figure out how much power these devices are using. Callie Babbitt and her colleagues at the Rochester Institute of Technology in New York tracked the environmental costs for each product throughout its life 一from when its minerals are mined to when we stop using the device. This method provided a readout for how home energy use has evolved since the early 1990s.
Devices were grouped by generation. Desktop computers, basic mobile phones, and box-set TVs defined 1992. Digital cameras arrived on the scene in 1997. And MP3 players, smart phones, and LCD TVs entered homes in 2002, before tablets and e-readers showed up in 2007.
As we accumulated more devices, however, we didn't throw out our old ones. “The living-room television is replaced and gets planted in the kids’ room, and suddenly one day, you have a TV in every room of the house,” said one researcher. The average number of electronic devices rose from four per household in 1992 to 13 in 2007. We’r e not just keeping these old devices --- we continue to use them. According to the analysis of Babbitt's team, old desktop monitors and box TVs with cathode ray tubes are the worst devices with their energy consumption and contribution to greenhouse gas emissions (排放) more than doubling during the 1992 to 2007 window.
So what's the solution (解决方案)？The team’s data only went up to 2007, but the researchers also explored what would happen if consumers replaced old products with electronics that serve more than one function, such as a tablet for word processing and TV viewing. They found that more on-demand entertainment viewing on tablets instead of TVs and desktop computers could cut energy consumption by 44%.
32. What does the author think of new devices?
A. They are environment-friendly.
B. They are no better than the old.
C. They cost more to use at home.
D. They go out of style quickly.
33. Why did Babbitt’s team conduct the research?
A. To reduce the cost of minerals.
B. To test the life cycle of a product.
C. To update consumers on new technology.
D. To find out electricity consumption of the devices.
34. Which of the following uses the least energy?
A. The box-set TV.
B. The tablet.
C. The LCD TV.
D. The desktop computer.
35. What does the text suggest people do about old electronic devices?
A. Stop using them.
B. Take them apart.
C. Upgrade them.
D. Recycle them.
第二节（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。
Color is fundamental in home design - something you’ll always have in every room. A grasp of how to manage color in your spaces is one of the first steps, to creating rooms you’ll love to
live in. Do you want a room that's full of life? Professional? Or are you just looking for a place to relax after a long day? _____ 36 ____, color is the key to making a room feel the way you want it to feel.
Over the years, there have been a number of different techniques to help designers approach this important point. ___37___, they can get a little complex. But good news is that there're really only three kinds of decisions you need to make about color in your home: the small ones, the medium ones，and the large ones.
___38___ They're the little spots of color like throw pillows, mirrors and baskets that most of us use to add visual interest to our rooms. Less tiring than painting your walls：and less expensive than buying a colorful sofa, small color choices bring with them the significant benefit of being easily changeable.
Medium color choices arc generally furniture pieces such as sofas, dinner tables or bookshelves. ___39____. They require a bigger commitment than smaller ones, and they have a more powerful effect on the feeling of a space.
The large color decisions in your rooms concern the walls, ceilings, and floors. Whether you're looking at wallpaper or paint, the time, effort and relative expense put into it are significant.
___40___.
A. While all of them are useful
B. Whatever you’re looking for
C. If you're experimenting with a color
D. Small color choices are the ones we're most familiar with
E. It's not really a good idea to use too many small color pieces
F. So it pays to be sure, because you want to get it right the first time
G. Color choices in this range are a step up from the small ones in two major ways
第三部分语言知识运用（共两节，满分45分）
第一节(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、D四个选项中，选出可以填入空白处的最佳选项。
During my second year at the city college, I was told that the education department was offering a “free” course, c alled Thinking Chess, for three credits. I ___41__ the idea of taking the class because, after all. who doesn't want to __42 __ a few dollars? More than that, I’d always wanted to learn chess. And, even if I weren’t __43__ enough about free credits, news about our __44__ was appealing enough to me. He was an international grandmaster, which __45__ I would be learning from one of the game’s __46__. I could hardly wait to __47__ him.
Maurice Ashley was kind and smart, a former graduate returning to teach, and this __48__ was no game for him; he meant business. In his introduction, he made it __ 49__ that our credits would be hard-earned. In order to __50__ the class, among other criteria, we had to write a paper on how we plan to __51__ what we would learn in class to our future professions and, __52__, to our lives.
I managed to get an A in that __53__ and learned life lessons that have served me well beyond the __54__
Ten years after my chess class with Ashley. I’m still putting to use what he __55__ me: “The absolute most important __56__ that you learn when you play chess is how to make good __57__ . On every single move you have to __58__ a situation, process what your opponent (对手) is doing and __59__ the best move from among all your options.” These words still ring true today in my __60__ as a journalist.
41. A. put forward B. jumped at C. tired out D. turned down
42. A. waste B. earn C. save D. pay
43. A. excited B. worried C. moved D. tired
44. A. title B. competitor C. textbook D. instructor
45.A. urged B. demanded C. held D. meant
46.A. fastest B. easiest C. best D. rarest
47.A. interview B. meet C. challenge D. beat
48.A. chance B. qualification C. honor D. job
49.A. real B. perfect C. clear D. possible
50.A. attend B. pass C. skip D. observe
51.A. add B. expose C. apply D. compare
52. A. eventually B. naturally C. directly D. normally
53. A. game B. presentation C. course D. experiment
54. A. criterion B. classroom C. department D. situation
55. A. taught B. wrote C. questioned D. promised
56. A. fact B. step C. manner D. skill
57. A. grades B. decisions C. impressions D. comments
58. A. analyze B. describe C. rebuild D. control
59. A. announce B. signal C. block D. evaluate
60. A. role B. desire C. concem D. behavior
第二节（共10小题：毎小题1.5分，满分15分）
阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。
According to a review of evidence in a medical journal, runners live three years ______ (long) than non-ninncrs. You don’t have to run fast or for long 62 to _______ (see) the benefit. You may drink, smoke, be overweight and still reduce your risk of 63 _______ (die) early by running.
While running regularly can't make you live forever, the review says it 64______ (be) more effective at lengthening life 65 _____ walking, cycling or swimming. Two of the authors of the review also made a study published in 2014 66 _______ showed a mere five to 10 minutes a day of running reduced the risk of heart disease and early deaths from all 67 ________ (cause).
The best exercise is one that you enjoy and will do. Bui otherwise .... it's probably running. To avoid knee pain, you can run on soft surfaces, do exercises to 68 _________(strength) your leg muscles (肌肉avoid hills and get good running shoes. Running is cheap, easy and it's always 69 _________ (energy). If you are time poor, you need run for only half the time to get the same benefits as other sports, so perhaps we should all give 70______ a try.
第四部分写作（共两节，满分35分）
第一节短文改错（共10小题：每小题1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，每句最多有两处。每处错误仅涉及一个单词的增加、刪除或修增加：在缺词处加字符号（∧），并在其下面写出该加的词。
刪除：把多余的词用斜线（\）划掉。
修改：错的词下划一横线，并在该词下面写出修改后的词。注总：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。
During my last winter holiday, I went to countryside with my father to visit
my grandparents. I find a big change there. The first time I went there, they were
living in a small house with dogs, ducks, and another animals. Last winter when
I went here again, they had a big separate house to raise dozens of chicken. They also
had a small pond A which they raised fish. My grandpa said last summer they earned
quite a lot by sell the fish. I felt happily that their life had improved. At the end of
our trip, I told my father that I planned lo return for every two years, but he agreed.
第二节书面表达（满分25分）
假定你是李华，你的新西兰朋友Terry将去中国朋友家做客，发邮件向你询问友关习俗。请你回复邮件,内容包括：
1.到达时间：
2.合适的礼物：
3.餐桌礼仪。
注意：
1.词数100左右；
2.可以适当增加细节，以使行文连贯。
答案
1-5 BCCBA 6-10 BABCC 11-15 ABAAC 16-20 BCBCA
21-23 ADD 24-27 BCCD 28-31 BCBC 32-35 ADBA 36-40 BADGF
41-45 BCADD 46-50 CBDCB 51-55 CACBA 56-60 DBADA
61. longer 62. to see 63. dying 64. is 65. than 66. that/which
67. causes 68. strengthen 69. energetic 70. it/running
第一行71. countryside 前加the
第二行72. find-found 第三行73. another—other 第四行74. here-there
75. chicken- chickens 第五行76. which-where/前面加in 第六行77. sell-selling
78. happily-happy 第七行79.去掉for 80. but –and
2018全国高考1卷文科数学试题及答案(官方)-word版
2018年普通高等学校招生全国统一考试 文科数学 注意事项： 1．答卷前，考生务必将自己的姓名、考生号等填写在答题卡和试卷指定位置上． 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．3．考试结束后，将本试卷和答题卡一并交回． 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{} 02 A=，，{} 21012 B=-- ，，，，，则A B=（） A．{} 02 ，B．{} 12 ，C．{}0D．{} 21012 -- ，，，， 2．设 1 2 1 i z i i - =+ + ，则z=（） A．0 B．1 2 C．1D 3．某地区经过一年的新农村建设，农村的经济收入增加了一倍．实现翻番．为更好地了解该地区农村的经济收入变化情况，统计了该地区新农村建设前后农村的经济收入构成比例．得到如下饼图： 则下面结论中不正确的是（） A．新农村建设后，种植收入减少 B．新农村建设后，其他收入增加了一倍以上 C．新农村建设后，养殖收入增加了一倍 D．新农村建设后，养殖收入与第三产业收入的总和超过了经济收入的一半 4．已知椭圆C： 22 2 1 4 x y a +=的一个焦点为() 2,0，则C的离心率（） A．1 3 B． 1 2 C D
5．已知圆柱的上、下底面的中心分别为1O ，2O ，过直线12O O 的平面截该圆柱所得的截面是面积为8的正方形，则该圆柱的表面积为（ ） A ． B ．12π C ． D ．10π 6．设函数()()321f x x a x ax =+-+．若()f x 为奇函数，则曲线()y f x =在点()00，处的切线方程为（ ） A ．2y x =- B ．y x =- C ．2y x = D ．y x = 7．在ABC △中，AD 为BC 边上的中线，E 为AD 的中点，则EB =（ ） A ． 3144AB AC - B ．1344AB AC - C ． 3144AB AC + D ．1344 AB AC + 8．已知函数()222cos sin 2f x x x =-+，则（ ） A ．()f x 的最小正周期为π，最大值为3 B ．()f x 的最小正周期为π，最大值为4 C ．()f x 的最小正周期为2π，最大值为3 D ．()f x 的最小正周期为2π，最大值为4 9．某圆柱的高为2，底面周长为16，其三视图如图所示，圆柱表面上的点M 在 正视图上的对应点为A ，圆柱表面上的点N 在左视图上的对应点为B ，则 在此圆柱侧面上，从M 到N 的路径中，最短路径的长度为（ ） A ． B ． C ．3 D ．2 10．在长方体1111ABCD A B C D -中，2AB BC ==，1AC 与平面11BB C C 所成的角为30?，则该长方体的体积为（ ） A ．8 B ． C ． D ．
2018上海高考英语真题试题-上海市2018年高考英语试题
2017年上海高考英语真题试卷_上海市2017高考英语试卷及参考答案 2017年高考已经结束，相信大家都对高试卷感兴趣，下面是小编收集的上海市2017高考英语试卷及参考答案，供大家参考！ 第I卷 第一部分: 听力（共两节，满分30分） 做题时，先将答案标在试卷上。录音内容结束后，你将有两分钟的时间将试卷上的答案转涂到答题卡上。 第一节 (共5小题；每小题1.5分,满分7.5分) 听下面5段对话。每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。 每段对话仅读一遍。 1. Who has given up smoking? A. Jack. B. Frank. C. The woman. 2. Why does the woman apologize to the man? A. She broke his telephone. B. She didn’t take him to the hospital.
C. She forgot to tell him the message. 3. What is the probable relationship between the two speakers? A. Salesgirl and customer. B. Passenger and driver. C. Wife and husband. 4. What is the woman’s opinion about the course? A. Too hard. B. Worth taking. C. Very easy. 5. What is the woman doing? A. She is apologizing. B. She is complaining. C. She is worrying. 第二节（共15小题，每小题1.5分, 满分22.5分） 听下面5段对话或独白。每段对话或独白后几个小题，从题中所给的A、B、C三个选项中选出虽佳选项，并标在试卷的相应位置。听每段对话或独白前，你将有时间阅读各个小题，每小题5秒钟; 听完后，各小题将给出5秒钟的作答时间。每段对话或独白读两 遍。 听第6段材料，回答第6、7题。 6. Who wants to attend a US university? A. A daughter of the man’s friend. B. The man’s daughter. C. The man’s friend. 7. Where does the conversation probably take place? A. In a classroom. B. Over the phone. C. At a language
2018年高考真题全国1卷理科数学Word版含解析
2018年普通高等学校招生全国统一考试 (新课标Ⅰ卷) 理科数学 注意事项： 1．答题前，先将自己的姓名、准考证号填写在试题卷和答题卡上，并将准考证号条形码粘贴在答题卡上的指定位置。 2．选择题的作答：每小题选出答案后，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答题区域均无效。 3．非选择题的作答：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均无效。 4．考试结束后，请将本试题卷和答题卡一并上交。 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．设121i z i i -=++，则z =（ ） A ．0 B ． 12 C ．1 D 2．已知集合{}2|20A x x x =-->，则A =R e（ ） A ．{}|12x x -<< B ．{}|12x x -≤≤ C ．{} {}|1|2x x x x <-> D ．{} {}|1|2x x x x -≤≥ 3．某地区经过一年的新农村建设，农村的经济收入增加了一倍．实现翻番．为更好地了解该地区农村的经济收入变化情况，统计了该地区新农村建设前后农村的经济收入构成比例．得到如下饼图：
则下面结论中不正确的是（ ） A ．新农村建设后，种植收入减少 B ．新农村建设后，其他收入增加了一倍以上 C ．新农村建设后，养殖收入增加了一倍 D ．新农村建设后，养殖收入与第三产业收入的总和超过了经济收入的一半 4．记n S 为等差数列{}n a 的前n 项和．若3243S S S =+，12a =，则3a =（ ） A ．12- B ．10- C ．10 D ．12 5．设函数()()321f x x a x ax =+-+．若()f x 为奇函数，则曲线()y f x =在点()00，处的切线方程为（ ） A ．2y x =- B ．y x =- C ．2y x = D ．y x = 6．在ABC △中，AD 为BC 边上的中线，E 为AD 的中点，则EB =（ ） A ．31 44AB AC - B ．13 44AB AC - C ． 31 44 AB AC + D ． 13 44 AB AC + 7．某圆柱的高为2，底面周长为16，其三视图如右图所示，圆柱表面上的点 M 在正视图上的对应点为A ， 圆柱表面上的点N 在左视图上的对应点为B ，则在此圆柱侧面上，从M 到N 的路径中，最短路径的长度为（ ） A ． B ． C ．3 D ．2 8．设抛物线24C y x =：的焦点为F ，过点()20-，且斜率为2 3 的直线与C 交于M ，N 两点，则FM FN ?=（ ） A ．5 B ．6 C ．7 D ．8 9．已知函数()0 ln 0x e x f x x x ?=?>? ，≤，，()()g x f x x a =++，若()g x 存在2个零点，则a 的取值范 围是（ ） A ．[)10-， B ．[)0+∞， C ．[)1-+∞， D ．[)1+∞， 10．下图来自古希腊数学家希波克拉底所研究的几何图形，此图由三个半圆构成，三个半圆的直径分别为直角三角形ABC 的斜边BC ，直角边AB ，AC ，ABC △的三边所围成的区域
2018年全国卷1理科数学试题详细解析
2017年普通高等学校招生全国统一考试（全国I 卷） 理科数学 解析人 跃华 注意事项： 1．答卷前，考生务必将自己的、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。 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{}{} 131x A x x B x =<=<，，则（） A ．{}0=U A B x x D ．A B =?I 【答案】A 【解析】{}1A x x =<，{}{}310x B x x x =<=< ∴{}0A B x x =
3. 设有下面四个命题（） 1p ：若复数z 满足1 z ∈R ，则z ∈R ； 2p ：若复数z 满足2z ∈R ，则z ∈R ； 3p ：若复数12z z ，满足12z z ∈R ，则12z z =； 4p ：若复数z ∈R ，则z ∈R ． A ．13p p ， B ．14p p ， C ．23p p ， D ．24p p ， 【答案】B 【解析】1:p 设z a bi =+，则 2211a bi z a bi a b -==∈++R ，得到0b =，所以z ∈R .故1P 正确； 2:p 若z =-21，满足2z ∈R ，而z i =，不满足2z ∈R ，故2p 不正确； 3:p 若1z 1=，2z 2=，则12z z 2=，满足12z z ∈R ，而它们实部不相等，不是共轭复 数，故3p 不正确； 4:p 实数没有虚部，所以它的共轭复数是它本身，也属于实数，故4p 正确； 4. 记n S 为等差数列{}n a 的前n 项和，若4562448a a S +==，，则{}n a 的公差为（） A ．1 B ．2 C ．4 D ．8 【答案】C 【解析】45113424a a a d a d +=+++= 6165 6482 S a d ?=+ = 联立求得11 272461548a d a d +=???+=??① ② 3?-①②得()211524-=d 624d = 4d =∴ 选C 5. 函数()f x 在()-∞+∞，单调递减，且为奇函数．若()11f =-，则满足()121f x --≤≤的 x 的取值围是（） A ．[]22-， B ．[]11-， C ．[]04， D ．[]13， 【答案】D 【解析】因为()f x 为奇函数，所以()()111f f -=-=， 于是()121f x --≤≤等价于()()()121f f x f --≤≤| 又()f x 在()-∞+∞，单调递减 121x ∴--≤≤ 3x ∴1≤≤ 故选D
【作文范文】北京2018年高考英语真题卷
北京2018年高考英语真题卷 第一节 56. 假设你是红星中学高三学生李华，你的英国朋友Jim在给你的邮件中提到他对中国文化感兴趣，计划明年来北京上大学。他向你咨询相关信息。请给他回邮件，内容包括： (1) 表示欢迎；(2) 推荐他上哪所大学；(3) 建议他做哪些准备工作。 注意：(1). 词数不少于50；(2). 开头和结尾已给出，不计入总词数。 Dear Jim, _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ Yours, Li Hua 【答案】Dear Jim, I’m so glad to hear your future education plan in Beijing in your last letter. First I would like to express my warmest welcome to you and I am sure you will have the most unforgettable experience during your college in Beijing. Learning your keen interest in Chinese culture, I suggest you apply for Peking University, one of the best universities in China. Its Chinese Literature major is perfect for you where you can be completely soaked in Chinese profound history and rich culture. As for preparation, some reading in advance in needed like The Story of the Stone while some online courses of spoken Chinese can be helpful for you to adapt into the Chinese language environment. I sincerely hope your dream will come true and it’s my plea sure to show you around in Beijing when that day comes. If you have further questions, please feel free to let me know. Yours, Li Hua 【解析】本文为提纲式作文，文章要求写推荐信，为英国朋友介绍北京的大学。首先可以介
2018年高考理科综合(全国I卷)试题及参考答案(Word版)
绝密★启用前 2018年普通高等学校招生全国统一考试 理科综合能力测试 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。 3．考试结束后，将本试卷和答题卡一并交回。 可能用到的相对原子质量：H 1 Li 7 C 12 N 14 O 16 Na 23 S 32 Cl 35.5 Ar 40 Fe 56 I 127 一、选择题：本题共13小题，每小题6分，共78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．生物膜的结构与功能存在密切的联系。下列有关叙述错误的是 A．叶绿体的类囊体膜上存在催化ATP合成的酶 B．溶酶体膜破裂后释放出的酶会造成细胞结构的破坏 C．细胞的核膜是双层膜结构，核孔是物质进出细胞核的通道 D．线粒体DNA位于线粒体外膜上，编码参与呼吸作用的酶 2．生物体内的DNA常与蛋白质结合，以DNA-蛋白质复合物的形式存在。下列相关叙述错误的是 A．真核细胞染色体和染色质中都存在DNA-蛋白质复合物 B．真核细胞的核中有DNA-蛋白质复合物，而原核细胞的拟核中没有 C．若复合物中的某蛋白参与DNA复制，则该蛋白可能是DNA聚合酶 D．若复合物中正在进行RNA的合成，则该复合物中含有RNA聚合酶 3．下列有关植物根系吸收利用营养元素的叙述，错误的是 NO A．在酸性土壤中，小麦可吸收利用土壤中的N2和 3 B．农田适时松土有利于农作物根细胞对矿质元素的吸收 C．土壤微生物降解植物秸秆产生的无机离子可被根系吸收 D．给玉米施肥过多时，会因根系水分外流引起“烧苗”现象 理科综合试题第1页（共23页）
2018年高考全国卷1英语试题及答案
2018年普通高等学校招生全国统一考试 英语 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。 第一部分听力(共两节，满分30分) 做题时，先将答案标在试卷上。录音内容结束后，你将有两分钟的时间将试卷上的答案转涂到答题卡上。 第一节（共5小题；每小题1.5分，满分7.5分） 听下面5段对话。每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项。听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。 例：How much is the shirt? A. ￡ 19. 15. B. ￡ 9. 18. C. ￡ 9. 15. 答案是C。 1.what will James do tomorrow ? A.Watch a TV program. B.Give a talk. C.Write a report. 2.What can we say about the woman? A.She's generour. B.She's curious. C.She's helpful. 3.When does the traif leave?https://www.360docs.net/doc/e38774565.html, A.At 6:30. B.At8:30. C.At 10:30. 4.How does the wonar sRwr?m A.By car. B.On foot. C.By bike 5.What is the probable relationship between the speakers? A.Classmates. B.Teacher and student. C.Doctor and patient. 第二节（共15小题；每小题1.5分，满分22.5分） 听下面5段对话或独白。每段对话或独白后有几个小题，从题中所给的A、B、C三个选项中选出最佳选项。听每段对话或独白前，你将有时间阅读各个小题，每小题5秒钟；听完后，各小题将给出5秒钟的
(完整)2018年高考英语模拟试题
2018年高考英语模拟试题 第二部分阅读理解（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，并在答题卡上将该项涂黑。 A Australians really know how to have a good time. Any type of hobby that you can think of can be found in Australia. The following are four top Australian pastimes. Fishing Fishing is probably one of the most popular free-time activities in Australia and many people love spending their free time waiting at the end of a rod for a fish to bite on their line. There is free public access to almost all beaches，canals and coasts，which means there are plenty of great places to fish. Surfing Another popular pastime of the Australians is surfing. Australia has a lot of beautiful surf spots，especially in Queensland. Queensland has some of the best surf beaches in the country such as Noosa Heads，Stradbroke Island，and Burleigh Heads，with the Gold Coast being the best known.
(完整word)2018年全国高考1卷理科数学Word版
姓名： 2018年普通高等学校招生全国统一考试 (新课标Ⅰ卷) 理科数学 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．设，则（） A．0 B．C．D． 2．已知集合，则（） A．B． C．D． 3．某地区经过一年的新农村建设，农村的经济收入增加了一倍．实现翻番．为更好地了解该地区农村的经济收入变化情况，统计了该地区新农村建设前后农村的经济收入构成比例．得到如下饼图： 则下面结论中不正确的是（） A．新农村建设后，种植收入减少 B．新农村建设后，其他收入增加了一倍以上 C．新农村建设后，养殖收入增加了一倍 D．新农村建设后，养殖收入与第三产业收入的总和超过了经济收入的一半 4．记为等差数列的前项和．若，，则（） A．B．C．D．12
5．设函数．若为奇函数，则曲线在点处的切线方程为（）A．B．C．D． 6．在中，为边上的中线，为的中点，则（） A．B． C．D． 7．某圆柱的高为2，底面周长为16，其三视图如右图所示，圆柱表面上的点 在正视图上的对应点为，圆柱表面上的点在左视图上的对应点为， 则在此圆柱侧面上，从到的路径中，最短路径的长度为（） A．B．C．D．2 8．设抛物线的焦点为，过点且斜率为的直线与交于，两点， 则（） A．5 B．6 C．7 D．8 9．已知函数，，若存在2个零点，则的取值范围是（）A．B．C．D． 10．下图来自古希腊数学家希波克拉底所研究的几何图形，此图由三个半圆构成，三个半圆的直径分别为直角三角形的斜边，直角边，，的三边所围成 的区域记为Ⅰ，黑色部分记为Ⅱ，其余部分记为Ⅲ，在整个图形中随机取一 点，此点取自Ⅰ，Ⅱ，Ⅲ的概率分别记为，，，则（） A．B．C．D． 11．已知双曲线，为坐标原点，为的右焦点，过的直线与的两条渐近线的交点分别为，．若为直角三角形，则（） A．B．3 C．D．4 12．已知正方体的棱长为1，每条棱所在直线与平面所成的角都相等，则截此正方体所得截面面积的最大值为（） A．B．C．D．
2018高考全国卷1理科数学试题及答案(word版)
2018年普通高等学校招生全国统一考试 理科数学 注意事项: 1 ?答卷前，考生务必将自己的姓名、考生号等填写在答题卡和试卷指定位置上. 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. 3 ?考试结束后，将本试卷和答题卡一并交回. 题目要求的.） 3?某地区经过一年的新农村建设，农村的经济收入增加了一倍?实现翻番?为更好地了解该地区农村 则下面结论中不正确的是（ ） A ?新农村建设后，种植收入减少 B ?新农村建设后，其他收入增加了一倍以上 C ?新农村建设后，养殖收入增加了一倍 D ?新农村建设后，养殖收入与第三产业收入的总和超过了经济收入的一半 、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 1 ?设 z 1 2i , 2?已知集合 x|x 2 x C . x | x U x|x x|x w 1 U x|x > 2 的经济收入变化情况，统计了该地区新农村建设前后农村的经济收入构成比例?得到如下饼图:
10. 下图来自古希腊数学家希波克拉底所研究的几何图形，此图由三个半圆构成，三个半圆的直径分 别为直角三角形 ABC 的斜边BC ,直角边AB , AC , △ ABC 的三边所 围成的区域记为I, 黑色部分记为H,其余部分记为川，在整个图形中 随机取一点，此点取自I, n,川的概率分别记为 小,p 2, p 3，则（ ） A . P 1 P 2 B . 口 P 3 C . P 2 P 3 D . 2 11. 已知双曲线C : — y 2 1 , O 为坐标原点，F 为C 的右焦点，过F 的直线与C 的两条渐近线的交 3 点分别为M , N .若△ OMN 为直角三角形，则 MN | （ ） A . 3 B . 3 C . 2 3 D . 4 2 4 ?记S n 为等差数列 的前n 项和. 若3S 3 S 2 S 4 , a 2 , A . 12 10 C . 10 D . 12 5.设函数 x 3 1 x 2 ax . 为奇函数，则曲线 在点0, 0处的切线方程为 2x C . y 2x 6 .在△ ABC 中, AD 为BC 边上的中线, E 为AD 的中点，则 uur EB 3 uuu A . - AB 4 3 uu u C .二 AB 4 1 uiir -AC 4 1 uuu AC 4 1 uuu B . - AB 4 1 uuu D . - AB 4 3 UULT 3 AC 4 3UHT -AC 4 7.某圆柱的高为2，底面周长为16,其三视图如右图所示，圆柱表面上的点 M 在正视图上的对应点为 A ，圆柱表面上的点 N 在左视图上的对应点为 则在此圆柱侧面上, 从 M 到N 的路径中, 最短路径的长度为（ A . 2 17 C . 8.设抛物线 C : 4x 的焦点为F ，过点 luuu iuur FM FN C . 9.已知函数f e x , x w 0 ln x , x 0 0, 2 且斜率为 的直线与C 交于M , N 两点, 3 x a ，若g x 存在2个零点，则a 的取值范围是（ C . 1 , D . 1, )
2018年高职高考英语真题
Ⅰ.补全对话（5小题，共10分） 阅读下列简短对话，从A、B、C、D中选出最佳答案，将对话补全。 例：M：How’s everything going? W:Fine,thank are you doing? M: . A.I’m 16 ,it is good you then ,not too bad 答案是D. : Could you please pass me the salt? W: . A.it's right , please don't ,please ,here you ：Hi，My name is Ivan,and I’m from Russia. W: ,Ivan. My name is Jane. I'm from Canada. to meet you B .Thank you think so are right : Garden ? W: Yes, can I book a room for Saturday? ’s your name B. Pardon me I help you 's the matter 4. M: I want to have my hair cut,please. W： kind of hairstyle do you want? A.I am sorry right C. Go ahead 5. M: The dinner is so delicious. W: Thank you_________. A.I'd love to it easy B.You're welcome ’m glad you like Ⅱ.词汇与语法（20小题，共40分） A）从A、B、C、D中选出划线的单词或词组的意义 week a tennis ball hit me on the head, but I tried to ignore the pain,believing that it would go away sooner or later. A.分享 B.忍受 C.忽略 D.治愈 seems to be a strong competition for senior high school students to enter university. A.愿望 B.竞争 C.倾向 D主张 8. Last night Peter not only finished the assignment but also read some poems by one of his favorite poets. A.家务 B.测试 C预习 D.作业 speaks French so well indeed but of course not so fluently as a native speaker does. A.本土的 B.优秀的 C.外国的 D.专业的 10. is in charge of the project to be carried out next month. A.投诉 B.批评 C.负责 D.参与
2018年全国高考英语真题
2018年高考英语真题试卷（全国卷Ⅰ含答案） 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 Washington, D. C Bicycle Tours Cherry Blossom Bike Tour in Washington, D.C. Duration:3 hours This small group bike tour is a fantastic way to see the world famous cherry trees with beautiful flowers of Washington，D.C. Your guide will provide a history lesson about the trees and the famous monuments where they blossom. Reserve your spot before availability-and the cherry blossoms-disappear！ Washington Capital Monuments Bicycle Tour Duration: 3 hours(4 miles) Join a guided bike tour and view some of the most popular monuments in Washington, D.C. Explore the monuments and memorials on the National Mall as your guide shares unique facts and history at each stop. Guided tour includes bike, helmet, cookies and bottled water. Capital City Bike Tour in Washington, D. C Duration: 3 hours Morning or Afternoon, this bike tour is the perfect tour for D. C. newcomers and locals looking to experience Washington, D.C. in a healthy way with minimum effort. Knowledgeable guides will entertain you with the most interesting stories about
2018年全国高考理科数学(全国一卷)试题及答案
2018年全国普通高等学校招生全国统一考试 （全国一卷）理科数学 一、选择题：（本题有12小题，每小题5分，共60分。） 1、设z=，则∣z∣=（） A.0 B. 1 1 C.1 D.√2 2、已知集合A={x|x2-x-2>0}，则C R A =（） A、{x|-1
A. 34 AB → - 1 4 AC → B. 14 AB → - 34 AC → C. 34 AB → + 14 AC → D. 14 AB → + 34 AC → 7、某圆柱的高为2，底面周长为16，其三视图如右图。圆柱表面上的点M 在正视图上的对应点为A ，圆柱表面上的点N 在左视图上的对应点为B ，则在此圆柱侧面上，从M 到N 的路径中，最短路径的长度为（ ） A. 2√17 B. 2√5 C. 3 D. 2 8.设抛物线C ：y 2=4x 的焦点为F ，过点（-2，0）且斜率为2 3的直线与C 交于M ，N 两点，则FM → ·FN → =( ) A.5 B.6 C.7 D.8 9.已知函数f （x ）= g （x ）=f （x ）+x+a ，若g （x ）存在2个零点，则a 的取值围是( ) A. [-1，0） B. [0，+∞） C. [-1，+∞） D. [1，+∞） 10.下图来自古希腊数学家希波克拉底所研究的几何图形。此图由三个半圆构成，三个半圆的直径分别为直角三角形ABC 的斜边BC ，直角边AB ，AC. △ABC 的三边所围成的区域记为Ⅰ，黑色部分记为Ⅱ，其余部分记为Ⅲ。在整个图形中随机取一点，此点取自Ⅰ，Ⅱ，Ⅲ的概率分别记为p 1，p 2，p 3，则( ) A. p 1=p 2 B. p 1=p 3 C. p 2=p 3 D. p 1=p 2+p 3 11.已知双曲线C ： 11 1 - y 2=1，O 为坐标原点，F 为C 的右焦点，过F 的直线与C 的两条渐近线的 交点分别为M ，N . 若△OMN 为直角三角形，则∣MN ∣=( ) A. 3 2 B. 3 C. D.4 12.已知正方体的棱长为1，每条棱所在直线与平面α 所成的角都相等，则α 截此正方体所得截面面积的最大值为（ ） A. B. C. D.
2018年高考全国卷1理科数学(含答案)
2018年全国统一高考数学试卷（理科）（新课标Ⅰ） 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．（5分）（2018?新课标Ⅰ）设z=+2i，则|z|=（） A．0 B．C．1 D． 2．（5分）（2018?新课标Ⅰ）已知集合A={x|x2﹣x﹣2＞0}，则?R A=（）A．{x|﹣1＜x＜2}B．{x|﹣1≤x≤2}C．{x|x＜﹣1}∪{x|x＞2}D．{x|x≤﹣1}∪{x|x≥2} 3．（5分）（2018?新课标Ⅰ）某地区经过一年的新农村建设，农村的经济收入增加了一倍，实现翻番．为更好地了解该地区农村的经济收入变化情况，统计了该地区新农村建设前后农村的经济收入构成比例，得到如下饼图： 则下面结论中不正确的是（） A．新农村建设后，种植收入减少 B．新农村建设后，其他收入增加了一倍以上 C．新农村建设后，养殖收入增加了一倍 D．新农村建设后，养殖收入与第三产业收入的总和超过了经济收入的一半4．（5分）（2018?新课标Ⅰ）记S n为等差数列{a n}的前n项和．若3S3=S2+S4，a1=2，则a5=（） A．﹣12 B．﹣10 C．10 D．12 5．（5分）（2018?新课标Ⅰ）设函数f（x）=x3+（a﹣1）x2+ax．若f（x）为奇函数，则曲线y=f（x）在点（0，0）处的切线方程为（）
A．y=﹣2x B．y=﹣x C．y=2x D．y=x 6．（5分）（2018?新课标Ⅰ）在△ABC中，AD为BC边上的中线，E为AD的中点，则=（） A．﹣B．﹣C．+D．+ 7．（5分）（2018?新课标Ⅰ）某圆柱的高为2，底面周长为16，其三视图如图．圆柱表面上的点M在正视图上的对应点为A，圆柱表面上的点N在左视图上的对应点为B，则在此圆柱侧面上，从M到N的路径中，最短路径的长度为（） A．2B．2 C．3 D．2 8．（5分）（2018?新课标Ⅰ）设抛物线C：y2=4x的焦点为F，过点（﹣2，0）且斜率为的直线与C交于M，N两点，则?=（） A．5 B．6 C．7 D．8 9．（5分）（2018?新课标Ⅰ）已知函数f（x）=，g（x）=f（x）+x+a．若 g（x）存在2个零点，则a的取值范围是（） A．[﹣1，0）B．[0，+∞）C．[﹣1，+∞）D．[1，+∞） 10．（5分）（2018?新课标Ⅰ）如图来自古希腊数学家希波克拉底所研究的几何图形．此图由三个半圆构成，三个半圆的直径分别为直角三角形ABC的斜边BC，直角边AB，AC．△ABC的三边所围成的区域记为I，黑色部分记为Ⅱ，其余部分记为Ⅲ．在整个图形中随机取一点，此点取自Ⅰ，Ⅱ，Ⅲ的概率分别记为p1，p2，p3，则（）
2018年-全国高考英语-真题
2018年高考英语真题试卷（全国卷I含答案） 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 Washington, D. C Bicycle Tours Cherry Blossom Bike Tour in Washington, D.C. Duration:3 hours This small group bike tour is a fantastic way to see the world famous cherry trees with beautiful flowers of Washington ，D.C. Your guide will provide a history lesson about the trees and the famous monuments where they blossom. Reserve your spot before availability-and the cherry blossoms-disappear ！Washington Capital Monuments Bicycle Tour Duration: 3 hours(4 miles) Join a guided bike tour and view some of the most popular monuments in Washington, D.C. Explore the monuments and memorials on the National Mall as your guide shares unique facts and history at each stop. Guided tour includes bike, helmet, cookies and bottled water. Capital City Bike Tour in Washington, D. C Duration: 3 hours Morning or Afternoon, this bike tour is the perfect tour for D. C. newcomers and locals looking to experience Washington, D.C. in a healthy way with minimum effort. Knowledgeable guides will entertain you with the most interesting stories about Presidents
2018年全国高考理科数学(全国一卷)试题及答案
2018年全国普通高等学校招生全国统一考试 （全国一卷）理科数学 一、选择题：（本题有12小题，每小题5分，共60分。） 1、设z= ，则∣z ∣=（ ） A.0 B. C.1 D. 2、已知集合A={x|x 2-x-2>0}，则 A =（ ） A 、{x|-1
7、某圆柱的高为2，底面周长为16，其三视图如右图。圆柱表面上的点M 在正视图上的对应点为A ，圆柱表面上的点N 在左视图上的对应点为B ，则在此圆柱侧面上，从M 到N 的路径中，最短路径的长度为（ ） A. 2 B. 2 C. 3 D. 2 8.设抛物线C ：y 2=4x 的焦点为F ，过点（-2，0）且斜率为 的直线与C 交于M ，N 两点，则 · =( ) A.5 B.6 C.7 D.8 9.已知函数f （x ）= g （x ）=f （x ）+x+a ，若g （x ）存在2个零点，则a 的取值范围是 ( ) A. [-1，0） B. [0，+∞） C. [-1，+∞） D. [1，+∞） 10.下图来自古希腊数学家希波克拉底所研究的几何图形。此图由三个半圆构成，三个半圆的直径分别为直角三角形ABC 的斜边BC ，直角边AB ，AC. △ABC 的三边所围成的区域记为Ⅰ，黑色部分记为Ⅱ，其余部分记为Ⅲ。在整个图形中随机取一点，此点取自Ⅰ，Ⅱ，Ⅲ的概率分别记为p 1，p 2，p 3， 则( ) A. p 1=p 2 B. p 1=p 3 C. p 2=p 3 D. p 1=p 2+p 3 11.已知双曲线C ： - y 2=1，O 为坐标原点，F 为C 的右焦点，过F 的直线与C 的两条渐近线的交 点分别为M ，N . 若△OMN 为直角三角形，则∣MN ∣=( ) A. B.3 C. D.4 12.已知正方体的棱长为1，每条棱所在直线与平面 所成的角都相等，则 截此正方体所得截面面积的最大值为（ ） A. B. C. D. 二、填空题：本题共4小题，每小题5分，共20分。 13.若x ，y 满足约束条件 则z=3x+2y 的最大值为 .