2019-2020年高二下學(xué)期第8周定時(shí)訓(xùn)練物理試題缺答案

1、2019-2020年高二下學(xué)期第8周定時(shí)訓(xùn)練物理試題缺答案、選擇題:1、一個(gè)筆帽豎立在桌面上平放的紙條上，要求把紙條從筆帽下抽出，如果緩慢拉動(dòng)紙條筆帽）緩慢拉動(dòng)紙條時(shí)，紙條對(duì)筆帽的水平快速拉動(dòng)紙條時(shí)，紙條對(duì)筆帽的水平必倒；若快速拉紙條，筆帽可能不倒。這是因?yàn)椋?TOC o 1-5 h z 緩慢拉動(dòng)紙條時(shí)，筆帽受到?jīng)_量小B作用力小C.快速拉動(dòng)紙條時(shí)，筆帽受到?jīng)_量小D作用力小2、 下列說法中不正確的是（）物體的運(yùn)動(dòng)狀態(tài)改變，其動(dòng)量一定改變物體的動(dòng)量發(fā)生了改變，則合外力一定對(duì)物體做了功如果物體在任何相等的時(shí)間內(nèi)，受到相同的沖量，則物體一定作勻變速運(yùn)動(dòng)如果物體是在恒定的合外力作用下運(yùn)動(dòng)，則單位時(shí)間內(nèi)動(dòng)

2、量的增量與物體的質(zhì)量無關(guān)。3、 如圖所示，光滑水平面上有質(zhì)量相等的A和B兩個(gè)物體，B上裝有一輕質(zhì)彈簧，B原來靜止，A以速度v正對(duì)著B滑行，當(dāng)彈簧壓縮到最短時(shí),B物體的速度為（A、v/2 ; B、v/3 ; C v ; D 2vv77/7/77ZZ7AQ_Z / / ZnlB4、 A、B兩球在光滑水平面上作相向運(yùn)動(dòng)，已知ra nm,當(dāng)兩球相碰后，其中一球停止，則可以斷定（）A.碰前A的動(dòng)量與B的動(dòng)量大小相等B.碰前A的動(dòng)量大于B的動(dòng)量C.若碰后A的速度為零，則碰前 A的動(dòng)量大于B的動(dòng)量D .若碰后B的速度為零，則碰前 A 的動(dòng)量大于B的動(dòng)量5、 光滑水平面上有甲、乙兩根條形磁鐵，N極相對(duì)，軸線在

3、同一直線上，輕推一下使它們相向運(yùn)動(dòng)，某時(shí)刻 V甲=2m/s, V乙=3m/s。磁鐵質(zhì)量 m甲=1kg, m乙=0. 5kg。乙反向時(shí)，甲的速度為零.甲、乙相距最近時(shí)速度均為.乙反向時(shí)，甲的速度為0.5m/s，方向不變.甲、乙相距最近時(shí)速度均為零1/3m/s。上述敘述中正確的有（A.B . C . D.，罠m( M6、如圖所示，質(zhì)量為 M的物體P靜止在光滑的水平桌面上，有另一質(zhì)量為m）的物體Q以速度V。正對(duì)P滑行，則它們相碰后（設(shè)桌面足夠大）（A. Q物體一定被彈回，因?yàn)镸 m.Q物體可能繼續(xù)向前C. Q物體速度不可能為零若相碰后兩物體分離，則過一段時(shí)間可能再碰。二、填空題:7、質(zhì)量為M的汽車拖

4、掛一輛質(zhì)量為m的拖車在平直的水平公路上以速度V0做勻速直線運(yùn)動(dòng),它們所受的運(yùn)動(dòng)阻力與其重力成正比,某時(shí)刻拖車脫鉤，汽車的牽引力保持不變，在拖車剛剛停下的瞬間，汽車速度大小為8、一個(gè)物體同時(shí)受到兩個(gè)力 F1、F2的作用，F(xiàn)1、F2與時(shí)間t的關(guān)系如圖所示，如果該物體從靜止開始運(yùn)動(dòng)，當(dāng)該物體具有最大速度時(shí)，物體運(yùn)動(dòng)的時(shí)間是s;物體的最大動(dòng)量是kg-m/s。9、光滑水平面上有 AB兩球沿同一直線運(yùn)動(dòng)，碰撞后兩球粘在一起。已知碰撞前它們的動(dòng)量分別為pA= +12kg m/s, pB= +28kg m/s，碰撞后 A球的動(dòng)量增加了 12 kg m/s，則可知碰撞前A、B兩球的速度之比為二、計(jì)算題:10、一

5、個(gè)質(zhì)量為 m的玩具蛙，蹲在質(zhì)量為M的小車的細(xì)桿上，小車放在光滑的水平面上. 若 車長(zhǎng)為I，細(xì)桿高為h,且位于小車的中點(diǎn)，如圖所示，試求當(dāng)玩具蛙最小以多大的水平速度v跳出，才能落到桌面上.11、兩塊高度相同的木塊A和B,緊靠著放在光滑的水平面上，其質(zhì)量分別為mi= 2kg,0.9kg。它們的下底面光滑，但上表面粗糙。另有一質(zhì)量m= 0.1kg的物體C（可視為質(zhì)點(diǎn)）以vc= 10m/s的速度恰好水平地滑動(dòng) A的上表面，物體 C最后停在B上，此時(shí) B C的共同速 度v = 0.5m/s,求木塊A的速度為多大？V0CAB2019-2020年高二下學(xué)期第一學(xué)段段中檢測(cè)英語試題含答案考試時(shí)間：90分鐘 冉

6、彤 審核：趙良璧一、單項(xiàng)選擇（共15小題，每小題1分，滿分15分） Can I have a day off tomorrow, Mr. Johnson?can man age without you.Forget itB. rm afraid notC. It dependsD. Of courseThe Smiths dont usually like stay ing athotelsbut last summer they spe nt afew days at a very nice hotel bysea./； aB. the； the C. /; theD. the； aIm c

7、alli ng about the apartme nt youthe other day. Could you tell me moreabout it?advertisedB. had advertisedC . are advertis ingD . will advertiseWang Gang is considering buying a puter, is considered to be a greathelp in our work and study.A. asB. whichC. thatD. whatTom was very angry aboutto Mary par

8、byirthdaynot in vit ingB. being not in vitedC. not being in vitedD. not to be in vitedNowadays, there is ain crease in childre ns creativity for they are greatlyen couraged to develop their tale nts.sharpB. slightC.naturalD.modest7.1 had hardly got to the officemy wife pho ned me to go back home at

9、on ce.A.whenB. thanC.untilD.afterYoupay too much attention to your reading skill, as it is so important.A .should ntB. cantC .must ntD. need ntI can see, there is only one way to solve this problem.A. As far asB. Eve n ifC. As long asD. As soon asWith the guidethe way, we fin ally got to the village

10、 which we werelook ing for.A. ledB. leadi ngC. to leadD. had ledHalf a month later, he found his lost motorcyclein the woods off thehighway.A. aba ndonedB . ren tedC . don atedD . refusedThe fire madedifficult to rescue the people trapped un der the ruins in theearthquake.A. oneB. thisC. thatD. itTh

11、e museum will open in the spring with an exhibition and a viewing platformvisitor can watch the big glasshouses being built.A . whatB . whereC . whe nD . whyIt will be a big help if you go to the store and get what we need fordinner., ril set the table.A . As a resultB . On the wholeC . In the mea n

12、whileD . As a matter of factmakes the book so extraordi nary is the creative imag in ati on of the writer.A. ThatB. WhatC.WhoD. Which二、完型填空（共15小題，每小題1分，滿分15分）Zigfried , a little mouse, blew his breath on the frosty window of the farmhouse and rubbed it to see the outside. Still no body came. Maybe t

13、oday, he thought _16_.It was only a few days before Christmas and he was watching for miracle （奇跡）.This farmhouse had bee n _17_ too long. It n eeded a family. Zigfrieds _18_ made a no ise. He realized that he had nt eate n anything since yesterday. He jumped from the windowsill （窗沿）,grabbed a bag f

14、rom his home, and went next door to Farmer Mikes.Farmer Mikes house had bee n a great place for the little mouse _19_ the farmer married a wife who had a cat. Zigfried _20_ when he thought of it. He looked around cautiously as he stole into the room where grain was stored and was quite _21_ as he fi

15、lled his bag with wheat. He was turning to leave when suddenly he22_ a hot breath about his ear. His heart beat _23_, and without thinking he started to run and luckily _24_ the catgaws （爪子）.The n ext after noon Zigfried heard some good n ews： a _25_ family would be moving into the farmhouse soon. Z

16、igfrieds granny would arrive on Christmas Eve to _26_ with him. He hoped that the family would e before his granny came. Before long, a car came up the road leading to the housewith butter sandwiches, cheese and chocolate.Zigfrieds Christmas miracle did arrive!The house came _27_ the n ext few days.

17、 Zigfried _28_ every sin gle hour of them. However, the day before Christmas when he was drinking hot chocolate with a _29_ smile at the door of his home, he heard the discussion of the children of the family about what they might get for Christmas. What ? A cat? The _30_ froze on his face； his mout

18、h fell wide open. After a long while , he at last found his voice：“ Hey Whose Christmas miracle is this ”16.A. carefullyB. hopefullyC. excitedlyD.proudly17.A. shabbyB. no isyC. emptyD.messy18.A. mouthB. noseC. stomachD.throat19.A. althoughB. uni essC. whereasD.until20.A. leaptB. sniffedC. trembledD.

19、withdrew21.A. curiousB. pitifulC. n ervousD.sen sible22.A. tookB. releasedC. feltD.drew23.A. stro nglyB. irregularlyC. slowlyD. wildly24.A. seizedB. escapedC. rubbedD.scratched25.A. closeB. happyC. newD.young26.A. celebrateB. muni cateC. peteD.promise27.A. aliveB. looseC. openD.still28.A. coun tedB.

20、 missedC. enjo yedD.wasted29.A. bitterB. forcedC. politeD.satisfied30.A. bloodB. sweatC. tearD.smile三、閱讀理解（共10小題:,每小題2分，滿分20分）ABelow is a selection from a popular sciencebook.If blood is red, why are veins （靜脈）blue?Actually , veins are not blue at all. They are more of a clear yellowish colour.Altho

21、ugh blood looks red when its outside the body when its sitting in a vein near the surface of the skir, its more of a dark reddish purple colour. At the right depth these bloodfilled veins reflect less red light than the surrounding skin, making them look blue by paris on.Which works harder , your he

22、art or your brain?That ki nd of depe nds on whether youre busy thi nki ng or busy exercis ing. Youi heart works up to three times harder duri ng exercis,ea nd shifts eno ugh blood over alifetime to fill a supertanker. But in the long run, your brain probably tips it , because even when youre sitting

23、 still your brain is using twice as much energy as yourheart, and it takes four to five times as much blood to feed it.Why does spinning make you dizzy（眩暈的）？Because your brain gets con fused betwee n what youre see ing and what your feeli ng. The brain sen ses that youre spinning using special gravi

24、ty-a ndmotio n-se nsi ng orga ns in your inner earwhich work together with yourvisi on and bala nee stable.the system goes out of control, and your brain thinks youre moving while youre not!Where do feelings and emotions e fromMostly from an ancient part of the brain called the limbic system. All ma

25、mmals have this brain area from mice to dogs, cats, and humans. So all mammals feel basic emotions like fear pain and pleasure. But since human feeling also invoIve other, newer bits of the brain , we feel more plex emotions than any other ani mal on the pla net.What is the colour of blood in a vein

26、 near the surface of the skin?A. Blue. B. Dark reddish purple. C. Red. D. Light yellow.Which of the following statements about our brain is true?The brains of the other mammals are as plex as those of humans.When our brain senses the spinning we will feel dizzy.C . In the long run, our brain probabl

27、y works harder than our heart.D . Our feeli ngs and emoti ons e from the most developed area in our brai n.33 . What is the mai n purpose of the select ion?A . To provide in formati on about our body.B . To give advice on how to stay healthy.C . To challe nge new findings in medical research.D . To

28、report the latest discoveries in medical scie nee.BDown-to-earth means being honest, open, and easy to deal with. It is a pleasure to find some one who is dow n-to-earth. A pers on who is dow n-to-earth is easy to talk to. He or she accepts others as equals. A down-to-earth person may be an importan

29、t member of society, of course, but they do not let their importa nee go to their heads, and they do not consider themselves to be better than others who are less important. Some one who is filled with self-importa nce and pride, ofte n without cause, is said to have his nose in the air. There is no

30、 way a person with his nose in the air can be dow n-to-earth.America ns use ano ther expressi on that is similar in some way to dow n-to-earth. The expressi on is both feet on the ground. Some one with both feet on the ground is a pers on with a good un dersta nding of reality. He has what is called

31、 mon sen se. He may have dreams but he does not allow them to block his kno wledge of what is real. The opposite kind of pers on is one who has his head in the clouds. A man with his head in the clouds is a dreamer whose mind is not in the world. Sometimes such a dreamer can be brought back to reali

32、ty; sharp words from the teacher, for example, can usually get a daydream ing stude nt to put both feet back on the ground.The pers on who is dow n-to-earth usually has both feet on the ground. But the opposite is not always true. Some one with both feet on the ground may not be as ope n and easy to

33、 deal with as some one who is dow n-to-earth. When we have both our feet firmly on the ground, we are realistic and we act hon estly and ope nly toward others, and our lives are like the ground below us, solid and strong.34 . If a pers on has his nose in the air, he.A. is con fide ntis easy to deal

34、withis dow n to the earthalways thinks he is more important than others35The underlined sentence“ Butthe opposite is not always true. ”most probably means that .A. the person who has his nose in the air is not truea man with his head in the clouds is often not intelligentthe opposite direction is al

35、ways wrongD. a person who has both feet on the ground may not be down-to-earth 36From the passage, we can infer the person who is is the most popularkind of person.A. down-to-earthB. standing on the groundwith his nose in the airD. with his head in the cloudsCSome people will do just about anything

36、to save money. And I am one of them.Take my familys last vacation. It was my six- year-old sons winter break from school，and we were heading home from Fort Lauderdale after a weeklong trip. The flight was overbooked，and Delta，the airline，offered us $400 per person in credits to give up our seats and

37、 leave the next day. I had meetings in New Yo，rk so I had to get back. But that didnt mean my husband and my son couldnt stay. I took my nine-month-old and took off for home.The next day，my husband and son were offered more credits to take an even laterflight. Yes，I encouragedokay，ordered them to wa

38、it it out at the airport to“earnmore Delta Dollars. Our total take：$1,600.Not bad，huh?Now some people may think Im a bad mother and not such a great wife either.But as a big-time bargain hunter，I know the value of a dollar. And these day，s a good deal is something few of us can afford to pass up.rve

39、 made a liv ing look ing for the best deals and expos in（揭露）the worst tricks.have been the consumer reporter of NBCs Today show for over a decade. I have written a couple of books including one titled Tricks of the Trade：A Consumer Survival Guide. And I really do what I believe in.I tell you this be

40、cause there is no shame in getting your moneys worth. Im also tightfisted when it es to shoes，clothes for my children，and expensive restaurants. But I wouldnt hesitate to spend on a good haircut. It keeps its shape longer，and its the first thing people notice. And I will also spend on a classic piec

41、e of furniture. Quality lasts.37Why did Delta give the authors family credits?ATheir flight had been delayed.BThey had early bookings.CThey took a later flight.DTheir flight had been cancelled.38What can we learn about the author?AShe is very strict with her childrenBShe seldom makes a promise.CShe

42、rarely misses a good deal.DShe is interested in cheap products. 39What does the author do?Shes a teacher.Shes a housewife.Shes a bus in esswoma n.Shes a media person.40. What does the author want to tell us?How to spend money wisely.How to reserve airli ne seats.C . How to expose bad tricks.D . How

43、to make a bus in ess deal.四、閱讀填空（共5小題，滿分10分）根據(jù)短文內(nèi)容，從短文后的選項(xiàng)中選出能填入空白處的最佳選項(xiàng)。選項(xiàng)中有兩項(xiàng)為多余選項(xiàng)。Easy Ways to Keep Your Brain SharpEvery one is forgetful, but as we age, we start to feel like our brains are slowi ng down a bitand that can be a very annoying thing. _41_Read on for some tech niq ues worth tryi ng

44、._42_People who regularly made pla ns and looked forward to uping eve nts had a 50 percent reduced chanee of Alzheimers disea（早老性癡呆癥），according to a recent study. _43_ Somethi ng as simple as sett ing a goal to have a weekly coffee date with a friend will do. There s evidenee that people who have a

45、purpose in life or who areworking on long or short term goals appear to do better. In other words, keep your brain look ing forward.Go for a walk.Mildly raised glucose（葡萄糖）levels can harm the area of the brain that helps you form memories and physical activity can help get blood glucose down to norm

46、al levels. In fact, exercise produces chemicals that are good for your brain._ 44_Learn something new.Take a Spanish class online, join a drawing club, or learn to play cards. A study found that mental stimulation （刺激） limits the weakening effects of aging on memory and the mi nd. But the best thi n

47、g for your brain is whe n you lear n somethi ng new and are physically active at the same time. _45_Or go dancing with your frien ds.This can be especially harmful to the aged.Focus on the future.It should be someth ing like lear ning garde ning.So take a few minu tes each day to do some readi ng.Lu

48、ckily, research shows there is a lot you can do to avoid those mome nts.But dont worry if your schedule isnt filled with life-cha nging eve nts.G In other words, whe n you take care of your body, you take care of your brain.第II卷（非選擇題）五、單詞拼寫（共5小題，每小題1分，滿分5分）46.ln this quiet way, the first兩星期）of her v

49、isit soon passed away.Much new knowledge is（遙遠(yuǎn)的）from the immediate interest of theordinarypers on.Fresh air is有益的）to your health.The mountains are（反射，倒影）in the clear water, formi ng a pleasa ntpicture.To his滿意）,he passed the exam in ati on.六、語法填空（共10小題，每小題1分，滿分10分）My life is a lot51（easy） at high sc

50、hool because my fellow stude nts haveaccepted me. The few _52can not see the real pers on in side my body do notmake me53, and I just ignore them. All in all I have a good life. I am happyto have found many things I can do, like writing and puter programming. My ambiti on is to work for a firm that

51、develops puter software whe n I grow up. Last year I inven ted a puter football game and a big pany has decided to buy from me. I have a very busy life 54no time to sit around feeli ng sorry for myself.Without _55（pause） we jumped into the boat with the other whalers andheaded out into the bay. I lo

52、oked dow n in to the water and could see Old Tom swimmi ng by the boat,56（show） us the way. A few minutes57, therewas no Tom, so George started beating the water with his oar and there was Tom, circli ng back to the boat, lead ing us to the hunt aga in.There is no electricity or water and even no te

53、xtbooks either. I am still trying toadapt 58these conditions. _59, one thing is for sure, I have bee moreimagi native in my teachi ng. Scie nce is my most challe nging subject as my stude nts have no _60of doing experiments.七、短文改錯(cuò)（共1題，滿分10分）61 文中共有10處語言錯(cuò)誤，每句中最多有兩處。錯(cuò)誤涉及一個(gè)單詞的增加、刪除或修改。增加：在缺詞處加一個(gè)漏字符號(hào)（人）

54、，并在其下面寫出該加的詞。刪除：把多余的詞作斜線（）劃掉。修改：在錯(cuò)的詞下劃一橫線，并在該詞下面寫出修改后的詞。注意：1 每處錯(cuò)誤及其修改均僅限一詞；2 .只允許修改10處，多者（從第11處起）不計(jì)分。Dear Sally,Now I d like to tell you something about my par-time job this summer vacation, of which I worked like a guide in a travel agency. The work was interesting but tired. I think it was helpful to work this holiday. It was the first time that I have earned money on my own. I ve e to understand how hard my parents work to support for the family. I used to keep on ask them for money, but now I ll never waste m