天津市耀华中学高三英语寒假验收试题
天津市耀华中学2015届高三年级寒假验收考试
英语试卷
★请同学们将试题答案填涂在答题卡上
本试卷分第Ⅰ卷(选择题) 和第Ⅱ卷(非选择题) 两部分, 共150分, 考试时间120分钟, 第Ⅰ卷1页至10页, 第Ⅱ卷10页至12页。
答卷前, 请务必将自己的姓名、考号、座位号填写在答题卡上和密封线外相应位置。答卷时, 务必将答案涂写在答题卡上, 答在试卷上的无效。考试结束后, 将答题卡和答题纸一并收回。祝各位同学考试顺利!
第Ⅰ卷(105分)
第一部分:听力(共两节, 满分20分)
第一节(共5小题, 每小题1分, 满分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. What does the man want to do tonight?
A. See a film.
B. Go to a concert.
C. Watch TV.
2. Where does the conversation take place?
A. In a bookstore.
B. In a library.
C. In a classroom.
3. What happened to the man?
A. He had a traffic accident.
B. He knocked over an old lady.
C. He lost the woman’s motorcycle.
4. What does the man have to do?
A. Attend a class.
B. Work on a report.
C. Visit his mother.
5. How much did the man weigh a month ago?
A. 165 pounds.
B. 170 pounds.
C. 180 pounds.
第二节(共10小题, 每小题1.5分, 满分15分)
听下面5段对话。每段对话后有几个小题, 从题中所给的A、B、C三个选项中选出最佳选项, 并标在试卷的相应位置。听每段对话前, 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。每段材料读两遍。
听下面一段材料, 回答第6至8题。
6. What are the speakers mainly talking about?
A. How to spend the money.
B. What to buy for the students.
C. Whether to take a trip to Egypt.
7. Why does the woman suggest buying some computers?
A. They could be used for all kinds of functions.
B. The old ones are in a terrible condition.
C. All the students can benefit from that.
8. What do the sp eakers decide to do in the end?
A. Build a school theatre.
B. Seek the students’ opinion.
C. Ask the headmaster to decide.
听下面一段材料, 回答第9至11题。
9. What will the man do in the late afternoon?
A. Give a speech.
B. Write an article.
C. Prepare some materials.
10. Where will the man have dinner tonight?
A. At home.
B. In the office.
C. In a meeting room.
11. How will the man go home?
A. By bus.
B. By taxi.
C. By car.
听下面一段独白, 回答第12至15题。
12. What are the speakers mainly talking about?
A. Kinds of music.
B. Popular singers.
C. Activities.
13. What prize will the winner of the competition get?
A. Tickets for a film.
B. Tickets for a concert.
C. Tickets for Brazilian night.
14. Where will the Brazilian night be held?
A. In Oxford Street.
B. In London’s West End
C. At the Wembely Theatre.
15. What will follow the news report?
A. Details of the competition.
B. Songs from Robbie Williams.
C. Introduction to Brazilian music.
第二部分:英语知识运用(共两节, 满分45分)
第一节:单项填空(共15小题;每小题1分, 满分15分)
从A、B、C、D四个选项中, 选出可以填入空白处的最佳选项。
16. We all agreed that the cottage would ______ a perfect holiday home for the family.
A. make
B. turn
C. take
D. have
17. Parents and children should communicate more to ______ the gap between them so that they can understand each other better.
A. open
B. narrow
C. widen
D. leave
18. According to scientists, our mental abilities begin to ______ from the age of 27 after reaching the highest level at 22.
A. differ
B. shrink
C. fail
D. decline
19. Two lawyers have donated $50,000 to ______ our school’s campaign “Help the Needy”, which was started by our former headmaster three years ago
A. sponsor
B. launch
C. disturb
D. plan
20. Finally, my thanks go to my tutor, who has offered a lot of suggestions and comments on my paper and ______ every page of my draft.
A. approved
B. quoted
C. polished
D. folded
21. I’m so glad you’ve come here to ______ this matter i n person.
A. lead to
B. see to
C. turn to
D. refer to
22. —In this day and age, women can have children and jobs as well.
—I can’t agree more. It’s great to have the two ______.
A. linked
B. related
C. connected
D. combined
23. Mary, I ______ John of his promise to help you.
A. told
B. warned
C. reminded
D. advised
24. I ______ a bank account after I made $1,000 by doing a part-time job during the summer vacation.
A. borrowed
B. opened
C. entered
D. ordered
25. —Are you still mad at her?
—Not really, but I can’t ______ that her remarks hurt me.
A. deny
B. refuse
C. reject
D. decline
26. I’d prefer to ______ my judgement until I find all the evidence.
A. show
B. express
C. pass
D. reserve
27. The new movie ______ to be one of the biggest money-makers of all time .
A. agrees
B. promises
C. pretends
D. declines
28. —How did you like Nick’s performance last night?
—To be h onest, his singing didn’t ______ to me much
A. appeal B . belong C. refer D. occur
29. The minister said. “We are ready for discussions with any legal parties, but we’ll never ______ with criminals.”
A. negotiate
B. quarrel
C. argue
D. consult
30. Rod loves ______ clocks. However, he never manages to put them together again.
A. making up
B. giving away
C. taking apart
D. turning off
第二节:完形填空(共20小题;每小题1.5分, 满分30分)
阅读短文, 掌握其大意, 然后从各题所给的A、B、C、D四个选项中, 选出最佳选项。
My name is Nick Vujicic. I was born without any limbs (四肢). But one of
my most 31 videos on YouTube shows footage (视频) of me
skateboarding surfing, playing music, and best of all, 32 hugs from all
sorts of great people.
All in all, those are pretty ordinary 33 that just about anyone can
do, right? So 34 do you think that video has been viewed millions of
times? My theory is that people are 35 to watch it because in spite of
my physical limitati ons, I’m living 36 I have no limits.
People often expect someone 37 a severe disability to be inactive, maybe even angry. I like to 38 them by showing that I lead a very adventurous and fruitful life.
Among the hundreds of 39 on that vi deo, here’s one typical remark: “Seeing a guy like this being happy makes me wonder why I feel 40 for myself sometimes-or feel not funny
enough, or whatever. How can I 41 think thoughts like that when this guy is living without limbs and still bein g happy?”
I found happiness when I realized that imperfect 42 I may be, I am the perfect Nick Vujicic. I’m designed 43 God’s plan. That’s not to say that there isn’t 44 for improvement. I’m always trying to be better so I can better 45 th e world!
I do believe my life has no 46 . I want you to feel the same way about your life, no matter what your challenges may be. As we 47 our journey together, please take a moment to 48 any limitations you’ve placed on your life. Now think ab out what 49 would be like to be 50 those limitations.
What would your life be if anything were possible?
31. A. disappointing B. unforgettable C. popular D. expensive
32. A. receiving B. collecting C. returning D. asking
33. A. sports B. activities C. duties D. wonders
34. A. how B. what C. when D. why
35. A. drawn B. expected C. required D. supposed
36. A. even though B. in case C. as though D. so that
37. A. of B. from C. in D. with
38. A. charge B. greet C. surprise D. persuad e
39. A. comments B. pictures C. replies D. choices
40. A. nervous B. sorry C. eager D. desperate
41. A. still B. ever C. otherwise D. even
42. A. if B. as C. while D. although
43. A. according to B. in response to C. owing to D. in addition to
44. A. stage B. area C. situation D. room
45. A. protect B. rescue C. serve D. reserve
46. A. challenges B. limits C. doubts D. endings
47. A. break B. continue C. begin D. stop
48. A. worry about B. think about C. care about D. talk about
49. A. we B. one C. it D. you
50. A. free of B. devoted to C. aware of D. worried about
第三部分:阅读理解(共20小题;每小题2分, 满分40分)
阅读下列短文, 从每题所给的A、B、C、D四个选项中, 选出最佳选项。
A
Researchers are worried that young children are becoming addicted to technology and are losing their ability to perform simple tasks.
Most children at three or four are familiar with tapping the screen of a phone or tablet but can’t use their fing ers for tasks like building a tower out of blocks. Researchers also warn that older children can’t do simple writing tests because they are too used to tapping screens to write letters.
“I have spoken to many teachers who have concerns over the increasing number of young pupils who can tap a screen but have no skills to play with building blocks, or the pupils who cannot socialize with other pupils but whose parents talk proudly of their ability to use a tablet or smartphone,” said Colin Kinney, who is als o a teacher.
Instead of playing with other children on weekends and after school, kids are choosing to stay
indoors and quietly play on a tablet. If children do not learn to socialize at a young age, it can become much harder for them to learn how to make friends as they get older.
Kinney’s fellow teachers talk of pupils who come into their classrooms after spending most of the previous night playing computer games and whose attention is so limited that they may be tired and can’t focus on their lessons. How will a child who could grow up to be a very good artist be able to succeed if he or she does not learn how to use a paintbrush and develop his or her painting skills?
While it is certainly necessary to know how to use technology in today’s world, it i s still very important for children to have basic social and physical skills to draw on as they get older. “In the same way we can use a brick to either break a window or build a house, digital technology can be used for good or bad, and teachers can and should help their pupils make positive choices so they have positive experiences,” said Colin Kinney.
51. Many older children find it hard to do simple writing tests mainly because ______.
A. they haven’t made full preparation for them
B. they don’t be come used to writing letters
C. they can’t find enough writing materials
D. they have little or no skills to play with building blocks
52. What are kids advised to do according to the passage?
A. Stay indoors and read more.
B. Practice to be good artists.
C. Spend more time with other kids.
D. Learn how to use a smartphone.
53. How did Colin Kinney arrive at his conclusion?
A. By watching his students carefully.
B. By listing some common questions.
C. By discussing with his students.
D. By talking with his colleagues.
54. What is the fellow teachers’ attitude towards pupils addicted to technology?
A. Positive.
B. Worried.
C. Unknown.
D. Unconcerned.
55. It is implied from Colin Kinney’s words in the last paragraph that ______.
A. students should balance technology and basic skills
B. technology is of great use for children in today’s world
C. teachers play an important role in students’ growth
D. it is better for students to break a window with a brick
B
Books have been our best friends from time immemorial. There was a time when reading them was supposed to be the best way of entertainment. Book lovers used to carry the book of their choice wherever they went. But, now in this microchip generation where everything is possible with the help of the Internet, we do not need to carry them fo r reading. E-books are gaining popularity and the Web world is now a treasure house of books. All book lovers can rejoice, as now they can find their favorite books online.
Reading books online is a comparatively new concept. People used to think that the Internet is a storehouse of information. But with the advancement of technology, now you can read and download books from the Web world. Imagine reading your favorite romantic novel while on a pleasant trip. You may think that it will be quite tiresome to carry such heavy books while touring. But there is nothing to worry anymore as e-books have come as a boon to us.
E-books are nothing but online books. The only difference between an e-book and a book is that one has a physical existence while the other dwells in the virtual world of the Internet. Content is the same for both. And you are saved from the hassles of carrying books as well.
There are various e-book depositories (贮藏室) from which you can either buy or download e-books. The process of downloading them is very easy. The websites give proper instructions and you just need to follow them to get hold of the book of your choice. Moreover, if you do not want to make investment, just read it by opening the online depository and read it for free.
From entertainment to business, e-books prove to be handy for all purposes. The time will come when they will become the most important entertainment option for many people.
56. Compared with traditional books, e-books are more popular because they are ______.
A. more attractive
B. more interesting
C. more convenient
D. more expensive
57. The main idea of the second paragraph is that ______.
A. you can have a more pleasant trip with e-books
B. technology has been developed a lot in the past few years
C. the Internet is full of a large amount of useful information
D. it is very tiring to carry heavy books here and there
58. The underlined word “hassles” in Para. 3 probably means ______.
A. costs
B. advantages
C. chances
D. troubles
59. Which of the following shows the organization of the passage?
A. B. C. D.
CP: Central Point P: Point SP: Sub-point C: Conclusion
60. Which of the following would be the best title for this passage?
A. E-books Are in Great Need Nowadays
B. The Great Development of Technology
C. The Time of E-books Is Coming to Us
D. The Difference between Traditional Books and E-books
C
Diana Jacobs thought her family had a workable plan to pay for college for her 21-year- old twin sons: a combination of savings, income, scholarships, and a modest amount of borrowing. Then her husband lost his job, and the plan fell apart.
“I have two kids in college, and I want to say ‘come home,’ but at the same time I want to provide them with a good education,” says Jacobs.
The Jacobs family did work out a solution: They asked and received more aid form the schools, and each son increased his borrowing to the maximum amount through the federal loan program. They will each graduate with $20,000 of debt, but at least they will be able to finish school.
With unemployment rising, financial aid administrators expect to hear more families like the
Jacobs. More students are applying for aid, and more families expect to need student loans. College administrators are concerned that they will not have enough aid money to go around.
At the same time, tuition (学费) continues to rise. A report from the National Center for Public Policy and Higher Education found that college tuition and fees increased 439% from 1982 to 2007, while average family income rose just 147%. Student borrowing has more than doubled in the last decade,
“If we go on this way for another 25years, we won’t have an affordable system of higher education,” says Patrick M. Callan, president of the center. “The middle class families have been financing it through debt. They will send kids to college whatever it takes, even if that means a huge amount of debt.”
Financial aid administrators have been having a hard time as many companies decide that student loans are not profitable enough and have stopped making them. The good news, however, is that federal loans account for about three quarters of student borrowing, and the government says that money will flow uninterrupted.
61. According to Para graph 1, why did the plan of Jacobs family fail?
A. The twins wasted too much money.
B. The father was out of work.
C. Their saving ran out.
D. The family fell apart.
62. How did the Jacobs manage to solve their problem?
A. They asked their kids to come home.
B. They borrowed $20,000 from the school.
C. They encouraged their twin sons to do part-time jobs.
D. They got help from the school and the federal government.
63. Financial aid administrators believe that ______.
A. more families will face the same problem as the Jacobses
B. the government will receive more letters of complaint
C. college tuition fees will double soon
D. America’s u nemployment will fall
64. What can we learn about the middle class families from the text?
A. They blamed the government for the tuition increase.
B. Their income remained steady in the last decade.
C. They will try their best to send kids to college.
D. Their debts will be paid off within 25 years.
65. According to the last paragraph, the government will ______.
A. provide most students will scholarships
B. dismiss some financial aid administrators
C. stop the companies from making student loans
D. go on providing financial support for college students
D
Someday a stranger will read your e-mail without your permission or scan the Website you’ve visited. Or perhaps someone will casually glance through your credit card purchases or cell phone bills to find out your shopping preferences or calling habits.
In fact, it’s likely that some of these things have already happened to you. Who would watch you without your permission? It might be a spouse, a girl friend, a marketing company, a boss, a cop or a criminal. Whoever it is, they will see you in a way you never intended to be seen—the 21st
century replacement of being caught naked.
Psychologists tell us boundaries are healthy, that it’s important to reveal yourself to friends, family and lovers in stages, at appropriate times. But few boundaries remain. The digital bread crumbs (碎屑) you leave everywhere make it easy for strange rs to reconstruct who you are, where you are and what you like. In some cases, a simple Google search can reveal what you think. Like it or not, increasingly we live in a world where you simply cannot keep a secret.
The key question is: Does that matter?
For many Americans, the answer apparently is “no.”
When opinion polls (投票数) ask Americans about privacy, most say they are concerned about losing it. A survey found a strong bad feeling about privacy, with 60 percent of respondents saying they feel their privacy is “slipping away, and that bothers me.”
But people say one thing and do another. Only a tiny part of Americans change any behaviors in an effort to preserve their privacy. Few people turn down a discount at tollbooths (收费站) to avoid using the EZ-Pass system that can track automobile movements. And few turn down supermarket loyalty cards. Privacy economist Alessandro Acquisition has run a series of tests that reveal people will give away personal information like Social Security numbers just to get their hands on a pitiful 50-cents-off coupon (优惠卷).
But privacy does matter —at least sometimes. It’s like health: When you have it, you don’t notice it. Only when it’s gone do you wish you’d done more to protect it.
66. What d oes the author mean by saying “the 21st century replacement of being caught naked”?
A. People’s personal information is easily found without their knowledge.
B. In the 21st century people try every means to look into others’ secrets.
C. People tend to be more frank with each other in t he information age.
D. Criminals are easily caught on the spot with advanced technology.
67. What would psychologists advise on the relationships between friends?
A. Friends should open their hearts to each other.
B. Friends should always be faithful to each other.
C. There should be a distance even between friends.
D. There should be fewer arguments between friends.
68. Why does the author say “We live in a world where you simply cannot keep a secret”?
A. Modern society has finally developed into an open society.
B. People leave traces around when using modern technology.
C. There are always people who are curious about others’ affairs.
D. Many search engines benefit from giving away people’s identities.
69. What do most Americans do as for privacy protection?
A. They change behaviors that might disclose their identity.
B. They use various loyalty cards for business transactions (交易).
C. They rely most and more on electronic devices.
D. They talk a lot but hardly do anything about it.
70. According to the passage, privacy is like health because _______.
A. people will make every effort to keep it
B. its importance is rarely understood
C. it is something that can easily be lost
D. people don’t treasure it until they lose it
第Ⅱ卷(45分)
★请同学们将试题答案填写在答题纸上
第四部分:写作(共三节, 满分45分)
第一节:词汇应用(共15小题;每小题1分, 满分15分)
A)根据下列句子中所给的首字母、中文意义,写出相应单词的正确形式,使句子意思通顺。
71. What are you doing out of bed, Tom? You’re s_________ to be asleep now.
72. Parents _________ (赋予) much importance to education. They will do their best to give their children that priceless gift.
73. Just as the clothes a person wears , the food he eats and the friends with whom he spends his time, his house _________ (反映) his personality.
74.C_________ (确信) of the accuracy of the data they had got from the experiment, they stuck to their opinion.
75. He _________ (占满) himself with routine business for the remainder of the morning.
B)根据下列句子的意义,从方框中选出适合的单词并用其正确形式填空,使句子意思通顺,
77. He has _________ the information clearly and now he is ready to do something else.
78. His best music was _________ by the memory of his mother.
79. Local schools are _________ to reduce the dropout rate with great effort.
80. Knowledge can be gained from books and it can also be ________ from life experience.
81. She was completely _________ in reading and forgot even to take her meal.
82. Paul went to visit his old friend last weekend, _________ by his daughter Clara.
83. Could I have an hour off this afternoon? I’m going to have these photos _________.
84. Ms Stewart is very kind for he always _________ the food to the homeless in the street.
85. At that time, education was _________ for white settlers only and few black people had the chance to go to school.
第二节:短语应用(共10小题;每小题1分, 满分10分)
根据下列句子意义,从方框中选出适合的短语并用其正确形式填空,使句子意思通顺,
honour sb for make out consist of put together contribute to feel at home adjust to look back on take advantage of base ...on knock out break up
87. _________ my senior high school days, I have a mixed feeling of happiness and sadness.
88. He spoke in such a low voice that it was impossible to__________ exactly what he was trying to say.
89. Peter has been chosen as an exchange student to China, and is determined to ________ this good opportunity to learn about its culture.
90. Plenty of fresh air _________ good health, so you should go to the mountain or the beach if you are available.
91. The atmosphere in our family is very friendly and I believe you will ___________ when you come and stay with us.
92. Jane Goodall _________ devoting most of her life to studying and protecting the chimps.
93. Many of the people who have become disabled for some reason have already __________ their new life.
94. There are more than 30 girls in our class. In other words, over half of the whole class ___ _________ them.
95. The film, which ________ on his second book, has become very popular with teenagers.
第三节:完成句子(共10小题;每小题2分, 满分20分)
根据下列句子意义和所给的中文或要求,用适当短语或句子的正确形式填空,使句子意思通顺,结构完整。
96. __________________________(毫无疑问) he is qualified to finish the task.
97. The aim of education is to teach young people to ____________________________(独立思考,不盲从他人).
98. The social welfare ________________(需要不断完善)for it has to _________________ (满足人们不断增长的需求).
99. If I had taken your advice, I ______________________(工作就不会有那么多麻烦).
100. ____________________(如果正确处理地话), the issue won’t become worse.
101. We should use more public resources to __________________ (引起公众对食品安全问题的关注).
102. After I had finished dinner, David proposed that __________________(我们立刻动身). 103. It is high time that _____________________(政府采取强力措施来解决) smog problem. 104. ______________________(Sabrina刚刚说完话) when her friend said sharply “Don’t be so mean,” pointing a finger of warning at her. (倒装)
105. By taking part in voluntary activities, we will _______________________(获得课堂上得不到的有益的知识和技能).
天津市耀华中学2015届高三年级寒假验收考试参考答案
第一部分:听力(共两节, 满分20分) Victor T5 B
1-5CAABB 6-10ACB CA 11-15C CBBA
第二部分:英语知识运用(共两节, 满分45分)
第一节:单项填空所有皆为动词考查,配合寒假作业动词词表
16-20ABDAC 21-25BDCBA 26-30DBAAC
第二节:完形填空
31-35CABDA 36-40CDC AB 41-45DBADC 46-50BCBCA
第三部分:阅读理解(共20小题;每小题2分, 满分40分)
51-55BCDBA 56-60CADAC 61-65BDACD 66-70 ACBDD
第四部分:写作(共三节, 满分45分)
第一节:词汇应用
71. supposed 72. attach 73. reflects 74. Convinced 75. occupied
76. circulate 77. conveyed 78. inspired 79. seeking 80. acquired
81. absorbed 82. accompanied 83. enlarged 84. distributes 85. intended
第二节:短语应用
86. broke up 87. Looking back on 88. make out 89. take advantage of
90. contributes to 91. feel at home 92. is/ was honoured for 93. adjusted to
94. consist of 95. is based on
第三节:完成句子
96. There is no doubt that/ It is doubtless that
97. think for themselves/ independently and not follow others blindly
98. needs/requires/wants improving constantly / constant improvement; meet/ satisfy the increasing demands of the people
99. wouldn't have had so much trouble
100. If handled / solved/ settled/ dealt with/ coped with properly/rightly/ in a right way
101. bring food safety to the attention of the public
102. we should set out/ off immediately/ right away/ at once.
103. (the) government took(adopted)/should take(adopt) strong/tough measures to deal with/ solve
104. Hardly/ Scarcely/ Rarely had Sabrina finished her words
105. acquire/ gain beneficial/ useful knowledge as well as skills that can't be acquired in the classroom.
【2020-2021自招】天津市耀华中学初升高自主招生数学模拟试卷【4套】【含解析】
第一套:满分150分 2020-2021年天津市耀华中学初升高 自主招生数学模拟卷 一.选择题(共8小题,满分48分) 1.(6分)如图,△ABC中,D、E是BC边上的点,BD:DE:EC=3:2:1,M在AC边上,CM:MA=1:2,BM交AD,AE于H,G, 则BH:HG:GM=() A.3:2:1 B.5:3:1 C.25:12:5 D.51:24:10 2.(6分)若关于x的一元二次方程(x-2)(x-3)=m有实数根x1,x2,且x1≠x2,有下列结论: ①x1=2,x2=3;②1 > ; m 4 ③二次函数y=(x-x1)(x-x2)+m的图象与x轴交点的坐标为(2,0)和(3,0). 其中,正确结论的个数是【】 A.0 B.1 C.2 D.3 3.(6分)已知长方形的面积为20cm2,设该长方形一边长为ycm,另一边的长为xcm,则y与x之间的函数图象大致是()
A. B. C. D. 4.(6分)如图,在平面直角坐标系中,⊙O 的半径为1,则直线y x 2=-与⊙O 的位置关系是( ) A .相离 B .相切 C .相交 D .以上三种情况都有可能 5.(6分)若一直角三角形的斜边长为c ,内切圆半径是r ,则内切圆的面积与三角形面积之比是( ) A . B . C . D . 6.(6分)如图,Rt △ABC 中,BC=,∠ACB=90°,∠A=30°, D 1是斜边AB 的中点,过D 1作D 1 E 1⊥AC 于E 1,连结BE 1交CD 1于D 2;过D 2作D 2E 2⊥AC 于E 2,连结BE 2交CD 1于D 3;过D 3作D 3E 3⊥AC 于E 3,…,如此继续,可以依次得到点E 4、E 5、…、E 2013,分别记△BCE 1、△BCE 2、△BCE 3、…、△BCE 2013的面积为S 1、S 2、S 3、…、S 2013.则S 2013的大小为( ) A. 31003 B.320136 C.310073 D. 671 4 7.(6分)抛物线y=ax 2与直线x=1,x=2,y=1,y=2围成的正方形有公共点,则实数a 的取值范围是( ) A .≤a ≤1 B .≤a ≤2 C .≤a ≤1 D .≤a ≤2
解析天津市耀华中学2021年高三第一次月考物理试题
一、单选题(每题3 分,共30 分) 1.甲乙两辆小车沿同一直线运动,速度时间图像如图所示,则() A. 运动时甲的加速度与乙的加速度之比为4:3 B. 运动时甲的加速度与乙的加速度之比为3:4 C. 相遇前甲乙最远距离为6m D. 甲乙同时开始运动 【答案】C 【解析】 【详解】速度图象的斜率等于物体的加速度,则甲的加速度,乙的加速度:,所以运动时甲的加速度与乙的加速度之比为1:4,故AB错误;当甲乙速度相等时,相距最远,速度图象与时间轴围成的面积等于物体在该段时间内通过的位移,故C正确;由图可知,甲先运动3s后乙开始运动,故D错误。所以C正确,ABD错误。 2.有一列火车正在做匀加速直线运动.从某时刻开始计时,第1分钟内,发现火车前进了180m.第6分钟内发现火车前进了360m.则火车的加速度为( ) A. 0.01m/s2 B. 0.05m/s2 C. 36m/s2D. 180m/s2 【答案】A 【解析】 由逐差法得x6-x1=5aT2,所以,选项A正确.
3.如图所示,质量为m的质点静止地放在半径为R的半球体上,质点与半球体间的动摩擦因数为μ,质点与球心的连线与水平地面的夹角为θ,则下列说法正确的是() A.地面对半球体的摩擦力方向水平向左 B. 质点对半球体的压力大小为mgcosθ C.质点受摩擦力大小为μmgsinθ D.质点受摩擦力大小为mgcosθ 【答案】D 【解析】 【详解】以整体为研究对象,整体处于静止状态,而水平方向不受外力,所以半球体不受地面的摩擦力,故A错误;对质点受力分析,质点受重力、支持力及摩擦力,如图所示: 在三力作用下物体处于平衡状态,则合力为零,质点对球面的压力为mgsinθ,故B错误;摩擦力沿切线方向,在切线方向重力的分力与摩擦力相等,即f=mgcosθ,故C错误,D正确。所以D正确,ABC错误。 4.如图所示,、两物体叠放在一起,在粗糙的水平面上保持相对静止地向右做匀减速直线运动,运动过程中受到的摩擦力( )
天津市耀华中学张楠老师—Na2O与Na2O2的性质比较
Na O与Na2O2的性质比较 2 By Dr.Zhang 张楠
Na 2O 2与Na 2O 的性质比较 性质Na 2O Na 2O 2 阴离子O 2-O 22-过氧根离子(-1价) 物质类别碱性氧化物过氧化物By Dr.Zhang 色态白色固体淡黄色固体 与H 2O 反应Na 2O+H 2O=2NaOH 2Na 2O 2+2H 2O=4NaOH+O 2↑与CO 2反应Na 2O+CO 2=Na 2CO 32Na 2O 2+2CO 2=2Na 2CO 3+O 2↑与HCl 反应 Na 2O+2HCl=2NaCl 2Na 2O 2+4HCl=4NaCl+2H 2O+O 2↑
Na 2O 2与Na 2O 的性质比较 性质Na 2O Na 2O 2 氧化性弱氧化性(Na +体现氧化性) 强氧化性(O 22-体现氧化性)漂白性无 有(氧化漂白,不可逆) By Dr.Zhang 稳定性2Na 2O+O 2 2Na 2O 2相对稳定 制取 6Na+2NaNO 24Na 2O+N 2↑ (不作要求)N 2对Na 2O 起保护作用 2Na+O 2 Na 2O 2 用途 制NaOH 漂白剂、消毒剂、供氧剂(防毒面具、潜艇)、制取氧气
Na2O2与Na2O的性质比较 1、氧化物分类 (1)碱性氧化物—与酸反应只生成盐和水的氧化物。如:Na2O (2)酸性氧化物—与碱反应只生成盐和水的氧化物。如:CO2 (3)两性氧化物—与酸和碱反应均只生成盐和水的氧化物。 O3 如:Al 2 (4)不成盐氧化物—不能与酸或碱反应的氧化物。如:CO (5)过氧化物、超氧化物等—氧元素的化合价不是-2。 O2(过氧化钠)、KO2(超氧化钾) 如:Na 2 By Dr.Zhang
2019-2020学年天津市耀华中学高一上学期期末考试数学试题
绝密★启用前 天津市耀华中学2019-2020学年度第一学期期末考试 高一年级数学学科试卷 注意事项:1、答题前填写好自己的姓名、班级、考号等信息 2、请将答案正确填写在答题卡上 一.选择题:本大题共8小题,每小题5分,共40分,在每小题的4个选项中,只有一项是符合题目要求的,将答案涂在答题卡上.......... 1. ο ο ο ο 105sin 15cos 75cos 15sin +等于 A. 0 B. 1 C. 23 D. 2 1 2. 把函数x y cos =的图象上的所有点的横坐标缩小到原来的一半(纵坐标不变),然后把图象向左平移 4π 个单位,则所得图象对应的函数解析式为 A. )421cos(πx y += B. )42cos(πx y += C. )82 1cos(πx y + = D. )2 2cos(πx y += 3. 7.03=a ,37.0=b ,7.0log 3=c ,则c b a ,,的大小关系是 A. b a c << B. a c b << C. a b c << D. c a b << 4.设R ?∈,则“=0?”是“()=cos(+)f x x ?()x R ∈为偶函数”的 A .充分不必要条件 B .必要不充分条件 C .充分必要条件 D .既不充分也不必要条件 5.已知函数()f x 是定义在R 上的偶函数, 且在区间[0,)+∞单调递增. 若实数a 满足212 (log )(log )2(1)f a f f a ≤+, 则a 的取值范围是 A .[1,2] B .10,2?? ??? C .(0,2] D .1,22?? ???? 6. 在ABC ?中,若tan tan 33tan A B A B +=?,且3 sin cos B B ?= , 则ABC ?的形状为 A. 直角三角形 B. 等边三角形 C. 等边三角形或直角三角形 D. 等腰直角三角形
2019-2020学年天津市耀华中学高一上学期末考试物理试题
天津市耀华中学2019—2020学年第一学期期末考试 高一年级物理学科试卷 一、单项选择题(每小题4分,共20分.在每小题给出的四个选项中有一个选项正确.) 1.如图所示,物块在力F 作用下向右沿水平方向匀加速运动,则物块 受的摩擦力F f 与拉力 F 的合力方向应该是 A .水平向右 B .向右偏上 C .竖直向上 D .向左偏上 2、甲乙两辆小车由同一地点出发运动,速度时间图象如图所示,则 A .运动时甲的加速度与乙的加速度之比为4:3 B .运动时甲的加速度与乙的加速度之比为3:4 C .乙车开始运动时,两车相距4.5m D .甲乙同时开始运动 3.A 、B 物体用跨过定滑轮的轻绳相连,A 的质量大于B 的质量,A 放置在水平地板上,在水平向右的外力F 作用下向右运动,与地板之间的动摩擦因数为一常数,B 物体匀减速上升。设A 受绳的拉力为T ,受地面的弹力为F N ,受地面摩擦力为f ,以下判断正确的是: A .T 不变,f 增大 B .T 减小,F N 增大 C .F N 减小,T 不变 D .f 减小,T 减小 4.一条不可伸长的轻绳跨过质量可忽略不计的定滑轮,绳的一端系一质量m=15kg 的重物,重物静止于地面上,有一质量为10kg 的猴子,从绳子的另一端沿绳向上爬,如图所示,不计滑轮摩擦,在重物不离开地面的条件下,猴子向上爬的最大加速度为(g 取10m/s 2) A .5m/s 2 B .10 m/s 2 C .15 m/s 2 D .25 m/s 2 F B A
5.甲、乙两球位于同一竖直直线上的不同位置,甲比乙高h,将甲、乙两球分别以大小为v1和v2的初速度沿同一水平方向抛出,不计空气阻力,下列条件中有可能使乙球击中甲球的是 A.同时抛出,且v1 专题一 耀华中学2007年早期智力开发实验班测试题目 (数学水平测试) 一、选择 1、如图,把长24厘米的长方体木块锯成六段,表面积比原来增加了40平方厘米,这条木块 原来的体积是()立方厘米 A 24 B 48 C 96 D 192 2、符号n!表示从1连续乘到n。如1!=1, 2!=1×2=2, 3!=1×2×3,…那么1!+2! +3!+…+2002!的个位数字是() A 3 B 2 C 1 D 0 3、如图,图中数字分别表示两个长方形与一个直角三角形的面积,那么标记“?”的直角三 角形面积为() A 9.5 B 9 C 8.5 D 8 4、若关于x的不等式9x+1≥a只有三个负整数解,则a的取值范围是() A -35天津市小升初小卷真题耀华中学(5套含答案)