【天津市耀华中学】2017届高考英语-冲刺导练-专题练习(二十七)及答案
天津市耀华中学2017届高考英语专题练习(二十七)
冲刺导练
一、完形填空
the floor drumming her heels. Her parents always 38 .
That was why she was alone on the 39 , wearing an expensive swimsuit. It had taken a massive tantrum to 40 her parents to buy it. They were back at the beach-house, 41 from the tantrum she had thrown when they told her that it was too dangerous to go diving 42 . “Dangerous?” she had said. “You just don’t want me to have 43 .I’m going and if you try to stop me, I’ll scream.”
“What are you doing?” a voice asked. Diane jumped. She did not know that the man was there 44 he spoke.
“I’m going diving,” she answered.
“You shouldn’t swim that day,” the man 45 . “There is a storm coming up.”
“You should mind your own 46 !” Diane replied and walked into the gentle waves.
“If you go out there you’ll be 47 ,” the man called after her. She did not bother to reply.
Diane slipped into the water and dived 48 until white caps began rolling in and it became harder to 49 against the current(水流). Saltwater hit against her face, making it 50 to breathe. Oh, why had she not listened to advice?
Panicking, she began to 51 . Then, just as it seemed as if she would slip beneath the surface, she heard a 52 voice. “Hold on! I’m coming.” With 53 , she saw the old man rowing an ancient-looking boat towards her. “I hope you’ve learned a lesson. You put us both in 54 ,” he shouted angrily, as he dragged her over the side of the 55 . Gratefully, Diane thanked him and ran towards the beach- house.
36.A.either B.neither C.nothing D.everything
37.A.jump B.lie C.spin D.sleep
38.A.set out B.set in C.gave in D.gave out
39.A.beach B.bed C.floor D.ship
40.A.allow B.warn C.get D.prefer
41.A.hanging B.recovering C.appearing D.traveling
42.A.alone B.away C.again D.aside
43.A.time B.money C.food D.fun
44.A.when B.until C.after D.once
45.A.decided B.intended C.advised D.repeated
46.A.business B.swimsuit C.friends D.parents
47.A.angry B.sorry C.confused D.excited
48.A.nervously B.sadly C.shyly D.happily
49.A.rise B.swim C.stop D.row
50.A.difficult B.easy C.comfortable D.suitable
51.A.speak B.sing C.sniff D.scream
52.A.calm B.frightening C.beautiful D.disgusting
53.A.regret B.relief C.interest D.ease
54.A.power B.safety C.danger D.thought
55.A.house B.wave C.beach D.boat
二、阅读理解Reading Comprehension
Passage 1
With proper safety guarantees, nuclear energy is a clean, efficient source of energy. That is why Three Mile Island(美国宾夕法尼亚州的三里岛, 该地核电站曾发生灾难性事故), Chernobyl, or, more recently, Fukushim (日本城市福岛)have not prevented countries from pursing nuclear power generating capacities. That is why it makes good economic and environmental sense for China to substantially boost(提升)its corresponding capabilities. On one hand, it is a constant and growing power undersupply to deal with. On the other hand, its dependence on coal-burning power generation is a known cause of air pollution.
According to official documents, last year alone, nuclear power plants saved the country 53.74million tons of standard coal, reducing carbon dioxide release by almost 141million tons. That’s a lot. And that was when nuclear power accounted for a meager 1.8percent of our national power supply, compared to around 20 percent in the United States and Great Britain.
From the perspective of pollutants reduction alone, nuclear power deserves a much more dominant role in China. But the crucial precondition is safety. The Chinese nuclear industry has made impressive progress, technology-wise and maintained a by-and-large satisfactory safety record for decades. But that safety record was achieved when nuclear power was approached with extreme prudence(审慎). No matter how technologically competent(有能力的)we become, that same degree of prudence remains necessary today and in the future. Nuclear safety is never just about high technology.
And, pride-worthy as it is, the domestic nuclear industry’s safety record is not perfect. None of our nuclear power generating units has suffered events or accidents rated above Level 2under the International Nuclear and Radiological Event Scale, according to the white paper. But that does not exclude there being events below or at Level 2. That justifies redoubled caution in the future, in the planning, building, and operating of nuclear facilities.
And as the number of nuclear facilities increase, it will highlight another risk, for which we remain relatively inexperienced, namely the safe disposal of nuclear waste.
That is why prudence must remain the watchword.
1.If there is another paragraph between the fifth and sixth, it will be mainly about that ________.
A.nuclear power deserves a much more dominant role in China
B.nuclear safety relies on more than just high-tech
C.we remain inexperienced in the safe disposal of nuclear waste
D.the number of nuclear facilities will increase
Passage 22016上海卷A
One early morning, I went into the living room to find my mother reading a thick book called Best Loved Poems to Read Again and Again. My interest was aroused only by the fact that the word “Poems” appeared in big,
hot pink letters.
“Is it good?” I asked her.
“Yeah,” she answered. “There’s one I really like and you’ll like it, too.” I leaned forward.
“‘Patty Poem,’” she read the title. Who is Patty? I wondered. The poem began:
She never puts her toys away,
Just leaves them scattered①where they lay,…①散乱的
The poem was just three short sections. The final one came quickly:
When she grows and gathers poise②, ②稳重
I’ll miss her harum-scarum③noise, ③莽撞的
And look in vain④for scattered toys. ④徒劳地
And I’ll be sad.
A terrible sorrow washed over me. Whoever Patty was, she was a mean girl. Then, the shock.
“It’s you, honey,” My mother said sadly.
To my mother, the poem revealed a parent’s affection when her child grows up and leaves. To me, the “she” in the poem was horror. It was my mama who would be sad. It was so terrible I burst out crying.
“What’s wrong?” my mother asked.
“Oh Mama,” I cried. “I don’t want to grow up ever!”
She smiled. “Honey, it’s okay. You’re not growing up anytime soon. And when you do, I’ll still love you, okay?”
“Okay,” I was still weeping. My panic has gone. But I could not help thinking about that silly poem. After what seemed like a safe amount of time, I read the poem again and was confused. It all fit so well together, like a puzzle. The language was simple, so simple that I could plainly understand its meaning, yet it was still beautiful. I was now fascinated by the idea of poetry, words that had the power to make or break a person’s world.
I have since fallen in love with other poems, but “Patty Poem” remains my poem. After all, “Patty Poem” gave me my love for poetry not because it was the poem that lifted my spirits, but because it was the one that hurt me the most.
66.Why was the writer attracted by the book Best Loved Poems to Read Again and Again?
A.It was a thick enough book. B.Something on its cover caught her eye.
C.Her mother was reading it with interest. D.It has a meaningful title.
67.After her mother read the poem to her, the writer felt ______ at first.
A.sad B.excited C.horrified D.confused
68.The writer’s mother liked to read “Patty Poem” probably because______.
A.it reflected her own childhood B.it was written in simple language
C.it was composed by a famous poet D.it gave her a hint of what would happen
69.It can be concluded from the passage that “Patty Poem “leads the writer to _______.
A.discover the power of poetry B.recognize her love for puzzles
C.find her eagerness to grow up D.experience great homesickness
Test 选练3
It’s such a happy-looking library, painted yellow, decorated with palm-tree stickers and sheltered from the Florida sun by its own roof. About the size of a microwave oven, it’s pedestrian-friendly, too, waiting for book lovers next to a sidewalk in Palm Beach Country Estates, along the northern boundary of Palm Beach Gardens.
It’s a library built with love.
A year ago, shortly after Janey Henriksen saw a Brain Williams report about the Little Free Library organization, a Wisconsin-based nonprofit that aims to promote literacy and build a sense of community in a neighborhood by making books freely available, she announced to her family of four, “That’s what we’re going to do for our spring break!”
Son Austin, now a 10th-grader, didn’t see the point of building a library that resembles a mailbox. But Janey insisted, and husband Peter unwillingly got to work. The 51-year-old owner of a ship supply company modified a small wooden house that he’d built years earlier for daughter Abbie’s toy horses, and made a door of glass.
After adding the library’s final touches(装点), the family hung a signboard on the front, instructing users to “take a book, return a book,” and making the Henriksen library, now one of several hundred like it nationwide and among more than 2, 500 in the world, the only Little Free Library in Palm Beach County.
They stocked it with 20 or so books they’d already read, a mix of science fiction, reference titles, novels and kids’ favorites. “I told them, keep in mind that you might not see it again,” said Janey, a stay-at-home mom.
Since then, the collection keeps replenishing(补充)itself, thanks to ongoing donations from borrowers. The library now gets an average of five visits a day.
The project’s best payoff, says Peter, are the thank-you notes left behind. “We had no idea in the beginning that it would be so popular.”
66.In what way is the library “pedestrian-friendly”?
A.It owns a yellow roof.B.It stands near a sidewalk.
C.It protects book lovers from the sun.D.It uses palm-tree stickers as decorations.
67.Janey got the idea to build a library from ______.
A.a visit to Brian Williams B.a spring break with her family
C.a book sent by one of her neighbors D.a report on a Wisconsin-based organization
68.The library was built ______.
A.by a ship supply company B.on the basis of toy horses
C.like a mailbox D.with glass
69.What can we infer about the signboard?
A.It was made by a user of the library.B.It marked a final touch to the library.
C.It aimed at making the library last long.D.It indicated the library was a family property.
70.The passage tells us that the users ______.
A.donate books to the library B.get paid to collect books for the library
C.receive thank-you notes for using the library D.visit the library over 5times on average daily
江西卷B
When international aid is given, steps must be taken to ensure that the aid reaches the people for whom it is intended. The way to achieve this may not be simple. It is very difficult for a nation to give help directly to people in another nation. The United Nations Organization(UNO)could undertake to direct the distribution of aid. Here
however rises the problem of costs. Also tied with this is time. Perhaps the UNO could set up a body of devoted men and women is every country who can speedily distribute aid to victims of floods and earthquakes.
More than the help that one nation can give to another during a disaster, it would be more effective to give other forms of help during normal times. A common proverb says, “Give me a fish and I eat for day, teach me to fish and I eat for a lifetime.” If we follow this wise saying, it would be right to teach people from less developed nations to take care of themselves. For example, a country could share its technology with another. This could be in simple areas like agriculture or in more complex areas like medical and health care or even in building satellites. Even small country is able to help less developed nations. Sometimes what is take for granted, like the setting up of a water purification plant or the administration of a school, could be useful for countries which are looking about to solve common problems. It does not cost much to share such simple things. Exchange students could be attached for a number of months or years and learn the required craft while on the site. They can then take their knowledge back to their homelands and if necessary come back from time to time to clear doubts or to update themselves. Such aid will be truly helpful and there is no chance of it being temporary or of it falling into the wrong hands.
Many countries run extensive courses in all sorts of skills. It will not cost much to include deserving foreigners in these courses. Besides giving effective help to the countries concerned, there is also the build-up of friendships to consider. Giving direct help by giving materials may be effective in the short run and must continue to be given in the event of emergencies. However, in the long run what is really effective would be the sharing of knowledge.
61.According to the author, how could international aid reach the victims in time?
A.By solving the cost problems.
B.By solving the transportation problems.
C.By setting up a body of devoted people in every country.
D.By relying on the direct distribution of the UNO.
62.What does the author try to express in the underlined sentence?
A.Providing food is vital.B.Learning to fish is helpful.
C.Teaching skills is essential D.Looking after others is important.
63.The second paragraph is developed mainly ______.
A.by example B.by process C.by comparison D.by contrast
64.Which aid is likely to fall into the wrong hands?
A.A medical team.B.An exchange program.C.A water plant.D.Financial support. 65.What can we infer about international aid from the passage?
A.It is facing difficulties.B.It is unnecessary during normal times.
C.It should be given in the form of materials.D.It has gained support from developed countries. 三、阅读表达
阅读下面短文, 按照要求用英语完成任务.
Book Creator
With the book creator you can create a book containing wiki pages of your choice. You can export the book in different formats(for example PDF or ODF)or order a printed copy.
See Help: Books for more information.
Using the Book creator
After the book creator has been enabled, the box as seen below is shown above each wiki page.
Add this page to your book
Adds the currently viewed article (page)to your book.
Show book
Opens a new page which will show a list of all articles (pages)that you added to your book. On that page, you can change the order of the articles in your book and structure them using chapters. Further, you can download the books as a PDF or ODF, or order a printed book.
Suggest pages
This tool analyzes the current set of pages in your book and suggests articles that might be also relevant to the overall topic of your book. This tool allows to create books quickly.
Disable
This will disable the Book creator and delete your book (unless you saved it first).
Adding pages without visiting them
A quick way to add pages is to simply hover on a linked article. If you wait about one second, a small box will
pop up with the message “Add linked wiki page to your book”. Click on this link, and the linked article will be added to your book.
Adding whole categories
If you are viewing a category page, you can add all the pages in that category at once. The Add this page to your book link will have changed into Add this category to your book. Click on this new link, and all the articles in that category will be added to your book. Relevant categories may be found at the very bottom of Wikipedia articles. Categories can also be added by hovering category links.
56.What’s the author’s purpose of writing this passage? (no more than 20 words)
57.How can you rearrange the articles in your book according to the passage? (no more than 10 words)58.What’s the function of Suggest pages? (no more than 15words)
59.What does the underlined phrase “pop up” mean in this passage? (no more than 2 words)
60.What do you think of the Book Creator? Please give your reasons. (no more than 25 words)
【语法重点运用导练】语法知能运用导练:词性与成分4—谓语动词与基本句型4
1.Johnson 先生去年教我们德语.
2.奶奶昨晚给我们讲了一个有趣的故事.
3.Mary把钱包交给校长了.
4.请把那本字典递给我好吗?
5.他把车票给列车员看.
6.这个学期我已经给父母写过三封信了.
7.我父亲已经给我买了一辆新自行车.
8.Robinson Crusoe 给自己做了一只小船.
9.请你给我弄一本新的, 好吗?
10.我替你叫辆出租汽车好吗?
【高考词汇分类记练】《天津卷·高考词汇手册》词表词性分类记练三)动词VERB 2C 检测选词填空根据句意, 选择正确的词并用适当的形式填入空中, 使句义完整. A.calculate, campaign, cancel, cash, challenge
1.She ________ the check to pay for the hotel charge.
2.This new discovery ________ traditional beliefs.
3.For reasons well-known to all, I had to ________ the trip.
4.The city hall is planning to start a ________ against smoking.
5.We can’t ________ on(having)good weather for the barbecue.
B.change, charge, chase, check, choose, claim
6.I’ll call the factory to ________ whether the beds can be delivered today.
7.If you _______ your mind—from pessimism to optimism—you can transform your life.
8.A majority of working women remain in full ________ of their home.
9.I’ve been ________ around the town, looking for a present for her.
10.If you _________ to laugh at me for it you’re very welcome.
11.The trend ________ our individual attention.
C.close, create, collect, comfort, cure
12.The road is ________ to the heavy motor traffic.
13.He’s gone to _______ his daughter from school.
14.He had saved enough money so that he could live in ________.
15.The best way to predict the future is to _____ it.
16.She tried every means to ________ her child of the bad habit.
17.We don't just ____ topics at the end of a conversation.
D.comment, compare, complete
18.She is lovely beyond ________.
19.And without their energy and stamina, there's no way we can __________ this project. 20.The director was not willing to ________ on the survey result.
21.He bought a lovely house ________ with furniture.
E. concentrate, concern, conclude, conduct
22.We will ________ our concert with the National Anthem.
23.The boy’s poor health ________ his parents.
24.We are ________ a survey of consumer attitudes towards organic food.
25.Birds _______ in places where food is abundant.
F. confirm, conflict, confuse, convince, consist
26.He tried to ________ them of the safety of travelling by airplane.
27.The principles are sometimes in ________ with political reality.
28.I always ________ Australia with Austria.
29.I gave the policeman a number to ring to ________ the fact.
30.The beauty of the picture ________ in its balance of colors.
31.Reports __________ on how much of the aid was reaching the famine victims. G.contrast, contribute, cool, copy, count
32.Could you get me a ________ of Gone with the Wind?
33.He looks healthier in ________ to/with his former self.
34.Her work has ________ enormously to our understanding of this difficult subject.
35.It is the little things that ________ in our work.
36.They ______ the designs from those on Greek vases.
37.I think we should wait until tempers have _____.
38.Her actions _________ sharply with her promises.
【高考词汇分类记练】《天津卷·高考词汇手册》词表词性分类记练三)动词VERB 4D 67
【巩固训练】D 【题组1】
1.“The interest shall be divided into five parts, according to the agreement made by both sides,” ____ the judge. A.announced B.declared C.commented D.delivered
2.She ______ to have lunch with her friends, saying that she wasn’t feeling well.
A.declined B.avoided C.declared D.approved
3._____ with flowers, flags and balloons, the streets take on a new look now.
A.Covered B.Filled C.Decorated D.Furnished
4.Teachers should _____ the amount of students’ homework and give them more free time.
A.increase B.decrease C.decline D.create
5.There are things people accept less the more you _____ them. The truer your story is, the less true it sometimes sounds.
A.decline B.condemn C.declare D.defend
6.If the building project to be completed by the end of this month is _____, the construction company will be fined.
A.canceled B.deleted C.slowed D.delayed
7.Since I’m abroad on business at the moment, I’m having some flowers ______ for her birthday. A.presented B.declared C.delivered D.expressed
8.The policewoman ______ that I should show her my license when I drove beyond the speed. A.demanded B.declared C.asked D.agreed
9.After checking in at the hotel, you should _____ valuables at the front desk for fear that you should lose them. A.deliver B.deposit C.declare D.defend
10.They _____ the prizes given by the school because of their good performances in sports.
A.desire B.deserve C.design D.desert
11.It is generally accepted that the experiences of the child in his first years largely ____ his character and later personality.
A.determined B.deserved
C.demanded D.defended
12.One of the best ways for people to keep fit is to _____ healthy eating habits.
A.grow B.raise C.design D.develop
13.The time he has___ in the past ten years to helping the disabled is now considered to be of great value. A.depended B.spent C.devoted D.provided
14.The two books have almost nothing in common, they _____ greatly from each other.
A.vary B.differ C.change D.direct
15.The most important step in learning is to _____ what has been absorbed.
A.digest B.deserve C.deposit D.deliver
16.High interest rates _____ people from borrowing money for buying houses.
A.dismiss B.decrease C.disturb D.discourage
17.Color-blind people often find it difficult to _____ between blue and green.
A.separate B.compare C.distinguish D.contrast
18.Having been translated into more than 55languages, millions of copies of Rowling’s books have been _____ around the world.
A.distributed B.divided C.delivered D.digested
19.You would be unlucky to see sharks, but there is no problem if you don’t _____ them.
A.divide B.disturb C.discourage D.force
20. When you come across a complex sentence that you cannot understand, try to ______ it into small sentences. A.distinguish B.digest C.distribute D.divide
21.— Will $ 200 ______?
— I’m afraid not. We need at least 50 more dollars.
A.count B.satisfy C.do D.fit
22.The government appealed to the public to _____ their blood voluntarily.
A.devote B.donate C.distribute D.deposit
23.The old woman would have been drowned but that a passer-by _____ her out of the water.
A.dragged B.drew C.deserted D.discouraged
24.Before he left for his vacation he went to the bank to ______ some money.
A.deposit B.donate C.gain D.draw
25.Being poor, many students in western areas have _____ out of school. I think it’s our duty to help them return to school.
A.dragged B.deserted C.dropped D.discouraged
26.It’s the kind of book you can _____; you don’t need to read the whole book.
A.dip into B.divide into C.put into D.get into
27.In the minority nationality the custom doesn’t ____ and has come down from generation to generation. A.die away B.die of C.die from D.die out
28.Different civilizations and social systems should _____ and benefit from each other to achieve common development.
A.draw upon B.draw near
C.draw up D.draw down
天津市耀华中学2017届高考英语专题练习(二十七)
冲刺导练
答案
【读写应用综合训练】
一、完形填空
5江西卷36~40.DBCAC41~45.BADBC46~50.ABDBA51~55.DABCD
二、阅读理解Reading Comprehension
微技能13:理解逻辑关系Logical clues;
Passage1.C2016上海卷A 66~69.BADA
Test 训练42013精选466~70.BDCCA61~65.CCADA
三、阅读表达
56.To tell readers how to use Book Creator to create a book containing chosen wiki pages.
57.By using Show book.
58.It analyzes the pages in your book and suggests articles with relevant topics.
59.Appear unexpectedly/suddenly.
60.One possible answer: I think it is useful (convenient…) because it offers various ways to create my own book in different formats.
【语法重点运用导练】语法知能运用导练:词性与成分4—谓语动词与基本句型4
1.Mr. Johnson taught us German last year.
2.Grandma told me an interesting story last night.
3.Mary handed the wallet to the schoolmaster.
4.Would you please pass me the dictionary?
5.He showed the ticket to the conductor.
6.This term I have written three letters to my parents.
7.My father has bought me a new bike.
8.Robinson Crusoe made himself a boat.
9.Will you please get me a new copy?
10.Shall I call you a taxi?
【高考词汇分类记练】《天津卷·高考词汇手册》词性分类记练三)动词VERB 3C 检测
1.cashed
2.challenges
3.cancel
4.campaign
5.calculate on=expect预期,指望
6.check
7.change
8.charge
9.chasing
10.choose
11.claimed
12.close
13.collect
14.comfort
15.create
16.cure
17.close
D.18.compare
19.complete
20.comment
21.complete
E.22.conclude=end
23.concerned
24.conducting
25.concentrate
H. 26.convince
27.conflict
28.confuse
29.confirm
30.consists=lies/exists
31.conflicted
J.32.copy
33.contrast
34.contributed
35.counts
36.copied
37.cooled
38.contrasted
【高考词汇分类记练】《天津卷·高考词汇手册》词表词性分类记练三)动词VERB 4D 67 1~5.BACBD6~10.DCABB11~15.ADCBA
16~20.DCA BD21~25.CBADC26~28.ADA
【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)