第六节限时训练
限 时 练 习(六)
限时练习（六）命题人：傅家杰沈群芳I. 单项选择1.In communication, a smile is usually ______ strong sign of a friendly and _______ open attitude.A. the; /B. a; anC. a; /D. the; an2.Helping others is a habit, _______ you can learn even at an early age.A. itB. thatC. whatD. one3.Would it be _______ for you to pick me up at four o’clock and take me to the airport?A. freeB. vacantC. handyD. convenient4.Teachers have to constantly update their knowledge in order to maintain their professional _____.A. consequenceB. independenceC. competenceD. intelligence5.Due to the widespread ___ of this medical technology, more diseases can be discovered andtreated at an early stage.A. presentationB. applicationC. qualificationD. appreciation6.Sam _______ some knowledge of the computer just by watching others working on it.A. brought upB. looked upC. picked upD. set up7.Encourage your children to try new things, but try not to _______ them too hard.A. drawB. strikeC. rushD. push8.The president hopes that the people will be better off when he quits than when he ________.A. has startedB. startsC. startedD. will start9.When Peter speaks in public, he always has trouble _______ the right things to say.A. thinking ofB. to think ofC. thought ofD. think of10.One of the few things you _______ say about English people with certainly is that they talk a lotabout the weather.A. needB. mustC. shouldD. can11.Sales director is a position _______ communication ability is just as important as sales skills.A. whichB. thatC. whenD. where12.The lawyer seldom wears anything other than a suit _______ the season.A. whateverB. whereverC. wheneverD. however13.It was _____ he came back from Africa that year _____ he met the girl he would like to marry.A. when; thenB. not; untilC. not until; thatD. only; when14.Hearing the bell ringing, out _______.A. rushing the childrenB. were rushing the childrenC. rushed the childrenD. the children rushed15.---- According to my grandma, it is a good idea to eat chicken soup when you have a cold.---- ________, scientists agree with her.A. Sooner or laterB. Once in a whileC. To be exactD. Believe it or notII. 完形填空A Love Note to My MomWhen I was a little girl, I would often accompany you as you modeled for fashion photographers. It was years later that I finally understood what role modeling 16 in your life. Little did I know you were 17 every penny you earned to go to 18 school.I cannot thank you enough for 19 you told me one autumn afternoon when I was nine. After finishing my homework, I wandered into the dining room where you were buried 20 piles of law books. I was 21 . Why were you doing what I do – memorizing textbooks and studying for 22 ? When you said you were in law school, I was more puzzled. I didn’t know Moms 23 he lawyers too. You smiled and said, “In life, you can do anything you want to do.”As young as I was, that statement kept 24 in my ears. I watched as you faced the 25 of completing your studies, starting companies with Dad, while still being a 26 and a Mom of five kids. I was exhausted just watching you 27 . With your words of wisdom in my 28 mind, I suddenly felt unlimited freedom to dream. My whole world 29 . I set out to live my life filled with 30 , seeing endless possibilities for personal and professional achievement.Your words became my motto. I 31 found myself in the unique position of being either the first (woman doctor in Maryland Rotary) 32 one of the few women (chief medical reporters) in my field. I gained strength every time I said, “Yes, I’ll try that.”Encouraged by your 33 , I have forged ahead (依然前行) with my life’s journey, less afraid to make mistakes, and 34 meeting each challenge. You did it, and now I’m 35 it.III．阅读理解ARichardSolo 1800 Rechargeable BatteryIn just minutes a day, plug in and charge your iPhone quickly!Just plug RichardSolo 1800 into your iPhone once or twice a day, for fifteen minutes, and keep your iPhone charge up. At your desk, or at dinner, plug RichardSolo into iPhone to instantly transfer charge. No more batter worries. RichardSolo will charge iPhone to full 1.5 times, and it is good for 3 ~ 5 years of recharges.Use the iPhone while charging it. Even charge the RichardSolo 1800 and iPhone together at the same time. Take only one charger when traveling and wake up in the morning with the RichardSolo and the iPhone charged.RichardSolo 1800 is largest in its class and holds its charge for months. Works with almost all iPhone cases.Your satisfaction is guaranteed, with our 30-day return privilege. If you’re not satisfied for any reason, we’ll email you a pre-paid return label.Actual customer comments:To have your company exhibit such good service is unbelievably refreshing. –P. S.This is what I call great customer support. I wish more companies would figure this out these days. Thank you so much. –D. C.You have provided me one of the best services I have ever seen on any online / telephone shopping. –T. K.You must have the fastest processing and shipping in the industry!! – M. C.This is the best customer service experience I have had in a long time. –L. L.I’ve read online about your amazing customer service, and I must say I’m now a true believer. –B. L.36. How long does it take the battery to charge up an iPhone?A. 15 minutes.B. 30 minutesC. 1.5 hours.D. 3 hours.37. What is special about the battery?A. It is built in an iPhone.B. It is the smallest of its kind.C. It can also be used as a charger.D. It keeps power for about 30 days.38. Who mentions the transporting of the battery?A. P. S.B. B. L.C. M. C.D. T. K.39. The customer comments on the battery are mainly about its ________.A. qualityB. serviceC. functionD. shoppingMake Up Y our Mind to SucceedKind-hearted parents have unknowingly left their children defenseless against failure. The generation born between 1980 and 2001 grew up playing sports where scores and performance were played down because “everyone’s a winner.” And their report cards sounded more positive than ever before. As a result, Stanford University professor Carol Dweck, PhD, calls them “the overpraised generation.”Dweck has been studying how people deal with failure for 40 years. Her research has led her to find out two clearly different mindsets that have a great effect on how we react to it. Here’s how they work:A fixed mind-set is grounded in the belief that talent is genetic – you’re a born artist, point guard, or numbers person. The fixed mind-set believes it’s sure to succeed without much effort and regards failure as personal shame. When things get difficult, it’s quick to blame, lie, and even stay away from future difficulties.On the other hand, a growth mind-set believes that no talent is entirely heaven-sent and that effort and learning make everything possible. Because the ego(自尊) isn’t on the line as much, the growth mind-set sees failure as a chance rather than shame. When faced with a difficulty, it’s quick to rethink, change and try again. In fact, it enjoys this experience.We are all born with growth mind-sets. (Otherwise, we wouldn’t be able to live in the world.) But parents, teachers, and instructors often push us into fixed mind-sets by encouraging certain actions and misdirecting praise. Dweck’s book, Mind-set: The New Psychology of Success, and online instructional program explain this is depth. But she says there are many little things you can start doing today to make sure that your children, grandchildren and even you are never defeated by failure.40. What does the author think about the present generation?A. They don’t do well at school.B. They are often misunderstood.C. They are eager to win in sports.D. They are given too much praise.41. A fixed mind-set person is probably one who _______.A. doesn’t want to work hardB. cares a lot about personal safetyC. cannot share his ideas with othersD. can succeed with the help of teachers42. What does the growth mind-set believe?A. Admitting failure is shameful.B. Talent comes with one’s birth.C. Scores should be highly valued.D. Getting over difficulties is enjoyable.43. What should parents do for their children based on Dweck’s study?A. Encourage them to learn from failure.B. Prevent them from making mistakes.C. Guide them in doing little things.D. Help them grow with praiseOn a hill 600 feet above the surrounding land, we watch the lines of rain move across the scene, the moon rise over the hills, and the stars appear in the sky. The views invite a long look from a comfortable chair in front of the wooden house.Every window in our wooden house has a view, and the forest and lakes seldom look the same as the hour before. Each look reminds us where we are.There is space for our three boys to play outside, to shoot arrows, collect tree seeds, build earth houses and climb trees.Our kids have learned the names of the trees and with the names have come familiarity and appreciation. As they tell all who show even a passing interest, ample makes the best fighting sticks and white pines are the best climbing trees.The air is clean and fresh. The water from the well has a pleasant taste, and it is perhaps the healthiest water our kids will ever drink. Though they have one glass a day of juice and the rest is water, they never say anything against that.The seasons change just outside the door. We watch the maples turn every shade of yellow and red in the fall and note the poplars’ (杨树) putting out the first green leaves of spring. The rainbow smelt fills the local stream as the ice gradually disappears, and the wood frogs start to sing in pools after being frozen for the winter. A family of birds rules our skies and flies over the lake.44. What can be learned from Paragraph 2?A. The scenes are colorful and changeable.B. There are many windows in the wooden house.C. The views remind us that we are in a wooden house.D. The lakes outside the windows are quite different in color.45. By mentioning the names of the trees, the author aims to show that ________.A. the kids like playing in treesB. the kids are very familiar with treesC. the kids have learned much knowledgeD. the kids find trees useful learning tools46. What does the underlined sentence in the last paragraph mean?A. The change of seasons is easily felt.B. The seasons make the scenes change.C. The weather often changes in the forest.D. The door is a good position to enjoy changing seasons.47. What is the main purpose of the author writing the text?A. To describe the beauty of the scene around the house.B. To introduce her children’s happy life in the forest.C. To show that living in the forest is healthful.D. To share the joy of living in the nature.。
2019精选教育选修6 课堂限时训练.doc
1．(2019·厦门模拟)北京某地采用土壤生物工程对公路沿线边坡(路基两侧的坡面)进行整治，取得了良好的生态效益。
该工程是在公路边坡上顺坡码放块石或卵石，在石块缝隙扦插柳干。
下图示意柳干扦插时和柳干生根发芽后的景观。
分析该地的土壤生物工程在控制边坡稳定和水土保持方面所起的作用。
解析：图示块石或卵石压在坡地的土壤上，柳干置于坡面且根系垂直于地面。
对边坡稳定的作用体现在，块石可压紧表面土壤使其不易下滑，柳干根系对边坡起到了固土作用。
对水土保持来说，块石、柳干枝叶可防止暴雨冲击土壤，也可减缓坡面径流、增加雨水下渗。
答案：块石可固定表土，紧实土壤，增加坡面稳定性；柳树生长时根系固土，吸收多余水分，防止土坡下滑。
该地夏季多暴雨，码放的块石可防止土壤直接遭受暴雨
的袭击，增加下渗，减少坡面径流；植物的枝叶还可拦截降雨，防止坡面溅蚀。
2．(2019·茂名模拟)下图为我国沿海三个地区的城市空气质量指数(AQCI)统计图，AQCI 数值越大，空气质量越差。
指出我国城市空气质量指数的时空变化特点并分析原因。
解析：“时空变化”指的是时间和空间变化，图示月份是时间，三个地区反映了空间位置。
影响空气质量的因素主要有排放到大气中的污染物数量、天气因素、大气运动状态等。
结合我国气候特征及区域经济发展差异回答即可。
答案：变化特点：冬高夏低(春降秋升)，北高南低。
原因：冬季大气相对稳定，污染物不易扩散，夏季降水多，利于改善空气质量；北方冬季燃煤取暖，大气中的污染物增加，导致空气质量差；北方地区重工业集中，矿物能源消耗大。
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高二英语限时训练六 牛津版
高二英语限时训练六On August 26,1999,New York City was struck by a terrible rainstorm. The rain caused the streets to 36 and the subway system almost came to a stop.Unfortunately, this happened during the morning rush hour. Many people who were going to work were 37 to go home. Some battled to 38 a taxi or to get on a bus. Still others faced the 39 bravely, walking miles to get to work.I 40 to be one of people on the way to work that morning. I went from subway line to subway line only to find that most 41 had stopped. After making my way 42 crowds of people, I finally found a subway line that was 43 .Unfortunately, there were so many people waiting to 44 the subway that I could not even get down the stairs to the 45 .So I took the train going in the opposite direction, and then switched back to the downtown train. Finally, after what seemed like forever, the train 46 my stop. Then I had to walk several blocks in the increasingly heavy rain. When I finally got to my office, I was 47 through, exhausted and 48 .My co-workers and I spent most of the day drying off. When it was 5:00 pm, I was ready to go home. I was about to turn off my computer 49 I received an email from Garth, my Director:I would like to thank all of you who made the effort and 50 reported to work. It is always reassuring (令人欣慰),at times like these, when employees so clearly show their 51 to their jobs.Thank you.Garth’s email was short, but I learned more from that 52 message than I ever did from a textbook. The email taught me that a few words of 53 can make a big difference. The rainstorm and the traffic 54 had made me tired and upset. But Garth’s words immediately 55 me and put a smile back on my face.36.A.break B.flood C.sink D.crash37.A.forced B.refused C.adjusted D.gathered38.A.order B.pay C.call D.search39.A.climate B.scenery C.storm D.burdened B.promised C.deserved D.happened41.A.practice B.routine C.process D.service42.A.to B.through C.over D.for43.A.operating B.cycling C.turning D.rushing44.A.check B.carry C.find D.board45.A.street B.ground C.floor D.platform46.A.paused B.crossed C.reached D.parked47.A.wet B.weak C.sick D.hurt48.A.ashamed B.discouraged C.surprised D.puzzled49.A.while B.when C.where D.after50.A.hardly B.casually C.absolutely D.eventually51.A.devotion B.donation C.connection D.reaction52.A.accurate B.urgent C.brief D.humorous53.A.promise B.appreciation C.advice D.guidance54.A.troubles B.signals C.rules D.signs55.A.corrected B.supported C.amazed D.refreshedAAn increase in students applying to study economics at university is being attributed to （归因于）the global economic crisis awakening a public thirst for knowledge about how the financial system works.Applications for degree courses beginning this autumn were up by 15% this January, according to UCAS, the Universities and Colleges Admissions Service. A. spokesman for the Royal Economic Society said applications to do economics at A-level were also up.Professor John Beath, the president of the society and a leading lecture at St Andrews University, said his first-year lectures-which are open to students from all departments—were drawing crowds of 400, rather than the usual 250.“There are a large nu mber of students who are not economics majors, who would like to learn something about it. One of the things I have done this year is to relate my teaching to contemporary events in a way that one hasn’t traditionally done. ” He added.University applications rose 7% last year. But there were rises above average in several subjects. Nursing saw a 15% jump, with people’s renewed interest in caters in the pubic sector（部门）, which are seen as more secure in economic crisis.A. recent study showed almost two thirds of parents believed schools should do more to teach pupils about financial matters, and almost half said their children had asked them what was going on, although a minority of parents felt they did not understand it themselves well enough to explain.Zack Hocking, the head of Child Trust Funds, said: “It’s possible that one good thing to arise from the downturn will be a generation that’s financially wiser and better equipped to manage their money through times of economic uncertainty.”71. Pro fessor John Beath’s lectures are .A. given in a traditional wayB. connected with the present situationC. open to both students and their parentsD. warmly received by economics72. Incomes in the public sector are more attractive because of their .A. greater stabilityB. higher payC. fewer applicationsD. better reputation73. in the opinion of most parents .A. eccentrics should be the focus of school teachingB. more students should be admitted to universitiesC. the teaching of financial matters should be strengthened.D. children should solve financial problems themselves74. According to Hocking, the global economic crisis might make the youngsters .A. wiser in money managementB. have access to better equipmentC. confide about their future careersD. get jobs in Child Trust Funds75. What’s the main idea of the text?A. Universities have received more applications.B. Economics is attracting an increasing numbers studentsC. college students benefit a lot from economic uncertaintyD. parents are concerned with children’s subject selection.BBusinesses are witnessing a difficult time, which has in turn produced influence on consumers’ desire to go green. However, shoppers are still laying stress on environmental concerns.Two thirds of customers say that environmental considerations inform their purchases to the same degree as they did a year ago, while more than a quarter say that they are now even better aware of the environmental effect on what they buy.This may help to influence how shops store goods on their shelves. And the companies should still make efforts to become more environmentally friendly. Two out of three people think it is important to buy from environmentally responsible companies, with about one in s even saying that they had even decided to take their custom elsewhere if they felt a company’s environmental reputation was not good enough.Harry Morrison, chief executive（主管）of the Carbon Trust, sympathizes：“I understand this situation where survival is very important now. But from environmental considerations, the clock is ticking—we don’t have much time. In addition, cutting carbon has an immediate effect as costs drop and a medium-term benefit for the brand.”Larger companies have an extra motivation to look at reducing their carbon footprint, as new rules next year will require businesses to buy carbon allowances to make up for their emissions （排放）. Those that have taken early action will have a head start. More than two thirds of consumers are not clear about which companies are environmentally responsible. This suggests that firms that are able to relay clearly their message to the public will be in a pole position to attract shoppers.The Carbon Trust believes that it can help by informing customers about the good work companies are doing. “When companies are granted（授予）the standard, they can use a logo（标识）in all their marketing which makes it clear that they are working towards cutting emissions,” Mr. Morrison said. 64．What’s the main idea of the passage?A．Businesses are finding ways to send their message to the shoppers.B．Companies will soon get information about cutting carbon emissions.C．Firms are making efforts to encourage customers to keep goods at home.D．Firms are urged to cut carbon emissions by shoppers’ environmental awareness.65．The underlined word “inform” in Paragraph 2 probably means“”.A．affect B．change C．disturb D．reject66．According to Harry Morrison, businesses .A．will benefit from cutting carbon emissionsB．should buy carbon allowances for shoppersC．are required to make up for their carbon emissionsD．have encouraged shoppers to take their custom elsewhere67 ．We can learn from the passage that businesses will .A．have a strong desire to reduce costsB．use the same logo in their marketingC．gain advantages by taking early actionD．attract more shoppers by storing goodsCIt was a Sunday and the heavy storm had lasted all night. The morning after the storm, though, was beautiful: blue skies, warm air and a calm, inviting sea touching the shore gently.My father realised it was a good day for fishing and invited my sister and me to go with him. I was only 14 and fishing had never been my thing, but I decided to go all the same. I’m so glad I did.On the road to the harbour we could see the terrible destruction on the coast, but the harbour itself was in fairly good shape. After all， it was protected by the arms of a bay that had only one tiny channel to the sea. As we got on board, we noticed two big humps(脊背) in the distance.On approaching them, we saw it was a mother whale with her baby. We couldn’t belie ve it ——there aren’t any whales along the coast here. The storm must have driven them across the ocean into the bay, in which the still water was so badly polluted that nothing could survive.The little baby whale——actually as big as our body——was obviously stuck and could not move. The mother dived under the water and came up suddenly, making big whirlpools(漩涡) and waves.”She’s trying to help her baby, but on the wrong side,” my father said. At this point, my father moved our boat in a semicircle to the other side and ,heading the boat towards the baby whale, pushed it gently. With our several gentle pushes the big hump turned over and disappeared under water. Then it swam up right beside its mum. They struggled in their desperate attempts to escape but missed the exit and started heading in the wrong direction. We hurried up to the whalesand tried to lead them towards the bay channel. Slowly, they let us lead them, sometimes rising from the water right beside us to breathe——and to give us a trusting look with those huge eyes. Once they hit their first part of clean water flowing straight from the sea, the mum gave us a wave with her tail and off they swam into the distance.In the excitement it had felt like only a few minutes, but we had been with those wonderful animals for almost an hour and a half. That was the simple and lasting beauty of the day, Nearly four decades later ,I still look back fondly to that golden day at sea.51. The author says “I’m so glad I did .”(in Para.2)because __________.A. be witnessed the whole process of fishingB. he enjoyed the beauty of the calm seaC. he experienced the rescue of the whalesD. he spent the weekend with his family52. The harbour survived the storm owing to____________.A. the shape of the harbourB. the arms of the bayC. the still water in the channelD. the long coast line53. The mother whale failed to help her baby because__________.A. she had stayed in the polluted water for too longB. the whirlpools she had made were not big enoughC. she had no other whales around to turn to for helpD. the waves pushed her baby in the wrong direction54.what is the theme of the story?A. Saving lives brings people a sense of happinessB. Fishing provides excitement for childrenC. It’s necessary to live in harmony with animalsD. I t’s vital to protect the environment答案36.B 37.A 38.C 39.C 40.D 41.D 42.B 43.A 44.D 45.D 46.C 47.A 48.B 49.B 50.D 51.A 52.C 53.B 54.A 55.D答案71.B 72.A 73.C 74.A 75.B答案：DAAC答案：51.C 52.B 53.D 54.A。
高三英语第六次限时训练
现吨市安达阳光实验学校三中高三英语第六次限时训练第一1.proveA.stoneB.routeC.stoveD.hook2.anxiousA.branchB.conclusionC.dangerousD.tongue3.breatheA.healthB.deafC.increaseD.pleasure4.achieveA.researchB.chemistC.techniqueD.stomach5.silverA.silentB.prettyC.tinyD.reject6. -Can you come on Monday or Tuesday?-I'm afraid _______ day is possible.A. eitherB. neitherC. someD. any7.-You haven't been to Beijing, have you?-______. How I wish to go there!A. Yes, I haveB. Yes, I haven'tC. No, I haveD. No, I haven't8. I hate ____ when people talk with their mouths full.A. it B. that C. these D. them9. Dr. Black comes from either Oxford or Cambridge, I can't remember___________.A. whereB. thereC. whichD. that10.- Nancy is not coming tonight.- But she______________!A. promisesB. promisedC. will promiseD. had promised11. If I had _____,I'd visit Europe, stopping at all the small interesting places.A. a long enough holidayB. an enough long holidayC. a holiday enough longD. a long holiday enough12. Nobody noticed the thief slip into the house because the lights happened to____.A. be put upB. give inC. be turned onD. go out13. - When can I come for the photos? I need them tomorrow afternoon. -They ____be ready by 12:00.A. canB. shouldC. mightD. need14.Professor White has written some short stories, but he is _____ known for his plays.A. the bestB. moreC. betterD. the most15. - Can I get you a cup of tea?- ________.A. That's very nice of youB. With pleasureC. You can, pleaseD. Thank you for the tea16. Why do you want a new job ____ you've got such a good one already?A. thatB. whereC. whichD. when17. They ____ the train until it disappeared in the distance.A. sawB. watchedC. noticedD. observed18. _____it with me and I'll see what I can do.A. When leftB. LeavingC. If you leaveD. Leave19.- I stayed at a hotel while in New York.- Oh, did you ? You _______with Barbara.A. could have stayedB. could stayC. would stayD. must have stayed20. Shirley____ a book about China last year but I don't know whether she has finished it.A. has writtenB. wroteC. had writtenD. was writing21. You will find this map of great ________in helping you to get round London.A. priceB. costC. valueD. usefulness 22. It was only when I reread his poems recently _________I began to appreciate their beauty.A. untilB. thatC. thenD. so23.Cleaning women in big cities usually get _____by the hour.A. payB. payingC. paidD. to pay24.- Hi, Tracy, you look tired.-I am tired. I _____the living room all day.A. paintedB. had paintedC. have been paintingD.have painted25. European football is played in 80 countries, ___it the most popular sport in the world.A. makingB. makesC. madeD. to make第二1．Spare A.fear B.earn C.pear D.beard2．navyA.neighhorB.nationalityC.relativeD.valley3．unitA.fierceB.nephewC.juiceD.sure4．gentleaniseB.bargainC.regularD.charge5．journeyA.merchantB.courtyardC.energyD.serious6．I had a really good weekend at my uncle’s．-______．A．Oh，that’s very nice of you B．CongratulationsC．It’s a pleasureD．oh，I’m glad to hear that7．-I’m going to the post office．-______you’re there，can you get me some stamps？A．As B．While C．Because D．If8．Paper money was in______use in China when Marco Polo visited the country in______thirteenth century．A．the；不填B．the；theC．不填；the D．不填；不填9．-Are the new rules working？-Yes．______books are stolen．A．Few B．More C．Some D．None10．-Alice，you feed the bird today，______？-But I fed it yesterday．A．do you B．Will youC．didn’t you D．don’t you11．______you’ve got a chance，you might as well make full use of it．A．Now that B．AfterC．Although D．As soon as 12．______him and then try to copy what he does．A． Mind B．Glance atC．Stare at D．Watch13．-I drove to Zhuhai for the air show last week．-Is that______you had a few days off？A．why B．when C．what D．where14．Robert is said______abroad，but I don’t know what country he studied in．A．to have studied B．to studyC．to be studying D．to have been studying15．-Will you stay for lunch？-Sorry，______．My brother is coming to see me．A．I mustn’t B．I can’tC．I needn’t D．I won’t16．The price______，but I doubt whether it will remain so．A．went down B．will go downC．has gone down D．was going down17．Few pleasures can equal______ofa cool drink on a hot day．A．some B．any C．that D．those18．You should make it a rule to leave things______you can find them again．A．when B．where C．then D．there19．Carol said the work would be done by October，______personally I doubtvery much．A．it B．that C．when D．which20．-Do you think the Stars will beat the Bulls？-Yes．They have better players，so I______them to win．A．hope B．Prefer C．expect D．want21．The purpose of new technologies is to make life easier，______it more difficult．A．not make B．not to makeC．not making D．do not make22．We’ll have to finish the job，______．A．long it takes however B．it takes however long C．long however it takes D．however long it takes23．Y 23.Your Performance in the driving test didnt reach the required standard-______，you failed．A．in the end B．after allC．in other words D．at the same time24．-Hey，look where you are going！-Oh，I’m terribly soryy．______．A．I’m not noticing B．I wasn’t noticingC．I haven’t noticed D．I don’t notice25． 25.When I got back home I saw a message Pinned to the door______“Sorry to miss you；will call later．”A．read B．reads C．to read D．reading第三l．What a pity my new computer doesn’t work．______ must be something wrong with it． A. It B. There C. This D. That2．E-mail, as well as telephones, ______ an important part in daily communication．A. is playingB. have playedC. are playingD. play3．______ has helped to save the drowning girl is worth praising.A. WhoB. The oneC. AnyoneD. Whoever4．______ is mentioned above，the number of the students in senior high schools is increasing．A. WhichB. AsC. ThatD. It5．It was ____ he said ___ disappointed me．A. what … thatB. that … thatC. what … whatD. that … what6．It is not rare in ______ that people in ______ fifties are going to university for further education．A.90s … theB.the 90s…C.90s…theirD.the 90s…their7． The director gave me a better offer than ______ ．A.that of Dick’sB.Dick’sC.he gave DickD. those of Dick8．—— Let me tell you something about the journalists．—Don’t you remember me the story yesterday？A.toldB.tellingC.to tellD.to have told9．______ your composition carefully， some spelling mistakes can be avoided．A.Having checkedB. CheckC.If you checkD. To check10．______ everybody knows about it, I don’t want to talk any more．A. For B.EvenC. Since D.However11． The number of the employees has grown from l,000 to l,200．This means it hasrisen ______ 20 percent．A.byB.atC.toD.with12． Books of this kind ______ well.A.sellB.sellC.are soldD.is sold13. One more week. ______ we will accomplish the task．A.orB.so thatC.andD.if14．There was a lot of fun at yesterday’s party． You ______ come, but why didn’t you？A.must haveB.shouldC. need haveD. ought to have15．——It was careless of you to have left your clothes outside all night．—— My God!______ .A. So did IB. So I didC.So were youD.So did you16．He ______ to the lab than he set out to do the experiment．A. has no sooner gotB.no sooner gotC. will no sooner getD. had no sooner got17．There are five pairs ______．but I’m at a loss which to buy．A. to be chosen B. to choose fromC. to chooseD.for choosing18．——Mum, why do you a1Ways make me eat an egg every day？——______ enough protein and nutrition as you are growing up．A.GetB.GettingC.To getD.To be getting19． A computer does only what thinking people ______．A.have it doB. have it doneC. have done itD. having it done20． The lady said she would buy a gift for her daughter with the ______．A. 20 dollars remainedB.20 dollars to remainC.remained 20 dollarsD.remaining 20 dollars21． May I speak to Mr. Thomas, please？——I’m afraid he isn’t in. Would you like to ______ a message？A.take B.write C.leave D.tell22．The manager has ______ to improve the working conditions in thecompany．A.acceptedB.allowedC.permittedD.agreed23． Those T-shirts are usually $35 each, but today they have a ______ price of $19 inthe Shopping Center．A.regularB.specialC.cheapD.particular24． We all know that ______ speak louder than words．A.movementsB.performancesC.operationsD.actions25． My parents always let me have my own ______ of living．A.wayB.methodC.mannerD.fashion26．______ with foreign countries can bring us much information about the world．A.ContrastpetitionC.Contactbination27． Mother told Jim to ______ the milk until it boiled and then turn off the gas.A.observeB.watchC.noticeD.glance28． It is a good way for us to memorize new words by seeing them ______.A. properlyB.repeatedlyC.clearlyually29． The new law will come into ______ on the day it is passed.A.effecteC.serviceD.existence30．Washington, a state in the United States, was named ______ one of the greatest American presidents.A. in honour ofB.instead ofC.in favour ofD.by means of31．——My daughter has passed the exam．——Congratulations! She’s really intelligent．——______A.No., no, she is nothing.B.Oh, thank you!C.Sometimes she is intelligent.D.You are right.32．——Would you rather come on Friday or Saturday？——______ A.Yes, of course. B.The other is better.C.What’s the matterD.Either would suit me.33．——______．——It’s nothing to worry about．I never liked it anyway．A.I lost my Walkman this morning．B.I feel awful．I’ye got a cold．C.I feel terrible，but I’ve left your tape somewhere．D.I’m sorry，but we don’t have that medicine．34．——You forgot to feed the cat again!——______A.I can’t remember.B.I don’t mind feeding her again.C.I’11 do it nowD.Yes, I did. What about you？35．——would you like to go to the Grand Theater with me tonight？——______A.Yes, I would like to go to the Grand Theater with you tonight.B.I’d love to, but I have an exam tomorrow.C.No, I wouldn’t.D.That’s all right.36．——Jane: Tom, let me introduce you to Lucy.——Tom：______——Lucy：Hi, I’m Lucy Lee．A.What’s your name?B.Hello.C.Nice to see you.D.Sorry, not right now.37．——Mum, I’ve cut my finger. It’s bleeding!——______A.Let me see.B.Don’t worry.C.Be careful.D.Let me have a look.38．——What happened to my library books？——______A.I’ve no idea.B.You borrowed them from the library.C.You bought them yesterday.D.They’re about long life.39．—— My children are always arguing.——______A.Just ignore them.B.that’s right.C.Are you sure?D.How old is the boy?40．—— Where is Tom this morning？——He’s got a cold. ——______A.Just tell him to take it easy.B.What’s the matter with him？C．He is absent. D.What？Where is he？。
限时训练6
1 限时训练六 一．完形填空 When sailors are allowed ashore after a long time at sea, they sometimes get drunk
and cause trouble. For this reason, the navy ___1___ has its police in big ports. Whenever sailors cause trouble, the police come and ___2___ them. One day, the police in a big seaport received a telephone call ___3___ a bar in the town. The barman said that a big sailor had got drunk and ___4___ the furniture in the bar. The officer in charge of the police guard that evening said that he would come immediately. Now, officers who ___5___ and punish the sailors ___6___ drunk usually chose ___7___ policeman they could find to go with them. ___8___ this particular officer did not do this. ___9___, he chose the smallest and ___10___ man he could find to go to the bar with him and ___11___ the sailor. Another officer who ___12___ there was surprised when he saw the officer of the guard chose such a small man. ___13___ he said to him, “Why ___14___ you take a big man with you? You have to fight the sailor who ___15___.” “Yes, you are ___16___ right,” answered the officer of the guard. “That is exactly ___17___ I am taking this small man. If you see two policemen coming ___18___ you, and one is ___19___ the other, which one ___20___ you attack?” 1. A. always B. seldom C. forever D. sometimes 2. A. meet with B. deal with C. see D. judge 3. A. about B. from C. in D. of 4. A. was breaking B. was ordering C. was moving D. was dusting 5. A. would go B. might beat C. dared to fight D. had to go 6. A. slightly B. not at all C. heavily D. much more 7. A. the biggest B. the youngest C. the bravest D. the experienced 8. A. In fact B. But C. So D. And 9. A. Instead B. Therefore C. Although D. Then 10. A. good-looking B. weakest-looking C. ugly-looking D. strongest-looking 2
第5.6节限时训练
高二物理第二学期物理第五、六节限时训练 一、选择题 交变电压时，额定电压为U 0的小灯泡恰好正常发光，已知灯泡的电阻为R ，图中电压表为理想电表．下列说法正确的是 ( )A ．变压器输入电压的瞬时值为u ＝U m sin ⎝⎛⎭⎫2πT t (V)B ．电压表的示数为2U 0C ．变压器的输入功率为U 20RD ．变压器的匝数比为U m ∶U 02．如图所示，理想变压器的输入电压保持不变．副线圈通过输电线接两个相同的灯泡L 1和L 2，输电线的等效电阻为R .开始时，开关S断开，当S 闭合时，下列说法正确的是( )A ．电压表示数变大B ．灯泡L 1更亮C ．电流表示数增大D ．变压器的输出功率减小3．(多选)(2014·高考山东卷) 如图，将额定电压为60 V 的用电器，通过一理想变压器接在正弦交变电源上．闭合开关S 后，用电器正常工作，交流电压表和交流电流表(均为理想电表)的示数分别为220 V 和2.2 A ．以下判断正确的是( )A ．变压器输入功率为484 WB ．通过原线圈的电流的有效值为0.6 AC ．通过副线圈的电流的最大值为2.2 AD ．变压器原、副线圈匝数比n 1∶n 2＝11∶34．如图所示，L 1和L 2是高压输电线，甲、乙是两只互感器，若已知n 1∶n 2＝1 000∶1，n 3∶n 4＝1∶100，图中电压表示数为220 V ，电流表示数为10 A ，则高压输电线的送电功率为( )A ．2.2×103 WB ．2.2×10－2 WC ．2.2×108 WD ．2.2×104 W☆5. 自耦变压器铁芯上只绕有一个线圈，原、副线圈都只取该线圈的某部分．一升压式自耦调压变压器的电路如图，其副线圈匝数可调．已知变压器线圈总匝数为1 900匝，原线圈为1 100匝，接在有效值为220 V 的交流电源上．当变压器输出电压调至最大时，负载R 上的功率为2.0 kW.设此时原线圈中电流有效值为I 1，负载两端电压的有效值为U 2，且是理想变压器，则U 2和I 1分别约为( )A ．380 V 和5.3 AB ．380 V 和9.1 AC ．240 V 和5.3 AD ．240 V 和9.1 A6．发电厂发电机的输出电压是U 1，发电厂至学校的输电线总电阻为R ，输电线中的电流为I ，学校得到的电压为U 2，则关于输电线上损失的功率，下列表达式错误的是( )A.U 21RB.(U 1－U 2)2RC ．I 2RD ．I (U 1－U 2) 7．照明供电线路的路端电压基本上是保持不变的，可是我们在晚上七八点钟用电高峰时开灯，电灯比深夜时要显得暗些，这是因为此时( )A ．总电阻比深夜时大，干路电流小，每盏灯分到的电压就小B ．总电阻比深夜时大，干路电流小，每一支路的电流就小C ．总电阻比深夜时小，干路电流大，输电线上损失的电压大D ．干路电流一定，支路比深夜时多，分去了一部分电压8．如图，理想变压器的原线圈接入u ＝11 0002·sin 100πt (V)的交变电压，副线圈通过电阻r ＝6 Ω的导线对“220 V 880 W ”的电器R L 供电，该电器正常工作．由此可知( )A ．原、副线圈的匝数比为50∶1B ．交变电压的频率为100 Hz1 2 3 4 5 6 7 8 9 10C．副线圈中电流的有效值为4 AD．变压器的输入功率为880 W9. (选做题)如图所示，理想变压器原、副线圈的匝数比为10∶1，b是原线圈的中心抽头，电压表和电流表均为理想交流电表，从某时刻开始在原线圈两端加上交变电压u，其瞬时值表达式为u＝220 2 sin(100πt) V，现把单刀双掷开关与a连接，则()A．电压表的示数为22 VB．流过滑动变阻器的电流的方向每秒改变100次C．在滑动变阻器的触头P向上移动的过程中，电压表和电流表的示数均变大D．若把单刀双掷开关由a扳向b时，保持滑动变阻器的触头P不动，电压表示数变大，电流表的示数变小10.如图远距离输电电路图中，升压变压器和降压变压器均为理想变压器，发电厂的输出电压和输电线的电阻均不变，随着发电厂输出功率的增大，下列说法中正确的有（）A．升压变压器的输出电压增大B．降压变压器的输出电压增大C．输电线上损耗的功率增大D．输电线上损耗的功率占总功率的比例增大二、计算题11.如图所示，理想变压器三个线圈的匝数之比为n1∶n2∶n3＝10∶5∶1，其中n1接到220 V的交流电源上，n2和n3分别与电阻R2、R3组成闭合回路．已知通过电阻R3的电流I3＝2 A，电阻R2＝110 Ω，求通过电阻R2的电流I2和通过原线圈的电流I1.12.如图所示，理想变压器B的原线圈跟副线圈的匝数比n1∶n2＝2∶1，交流电源电压u＝311sin 100πt V，F为熔断电流为I0＝1.0 A的保险丝，负载R为一可变电阻．(1)当电阻R＝100 Ω时，保险丝能否被熔断？(2)要使保险丝不被熔断，电阻R的阻值应不小于多少？变压器输出的电功率不能超过多少？13.如图甲为一理想变压器，ab为原线圈，ce为副线圈，d为副线圈引出的一个接头，原线圈输入正弦式交变电压的u－t图象如图乙所示．若只在ce间接一只R ce＝400 Ω的电阻，或只在de间接一只R de＝225 Ω的电阻，两种情况下电阻消耗的功率均为80 W.(1)请写出原线圈输入电压瞬时值u ab的表达式；(2)求只在ce间接400 Ω电阻时，原线圈中的电流I1；(3)求ce和de间线圈的匝数比n cen de.14（选做）某交流发电机输出功率为5×105 W，输出电压为U＝1.0×103 V，若输电线的总电阻R＝10 Ω，输电线上损失的电功率等于输电功率的5%，用户使用电压U用户＝380 V.(1)画出输电线路的示意图．(标明各部分的符号)(2)所用升压和降压变压器的原、副线圈的匝数比是多少？(使用的变压器是理想变压器)。
2 专题六 限时提升训练
[学生用书P161(单独成册)] (建议用时：60分钟) 1．(2023·辽宁省协作校第一次模拟)下图是某公园设计的一种惊险刺激的娱乐设施的简化图，除倾斜轨道AB段粗糙外，娱乐设施的其余轨道均光滑。根据设计要求，在竖直圆形轨道最高点安装一个压力传感器，测试挑战者对轨道的压力，并通过计算机显示出来。一质量m＝60 kg的挑战者由静止沿倾斜轨道滑下，然后无机械能损失地经水平轨道进入竖直圆形轨道，测得挑战者到达圆形轨道最高点时刚好对轨道无压力，离开圆形轨道后继续在水平直轨道上运动到D点，之后挑战越过壕沟。已知挑战者与倾斜轨道间的动摩擦因数μ＝0.1，图中α＝37°，R＝0.32 m，h＝1.25 m，s＝1.50 m，sin 37°＝0.6，重力加速度g取10 m/s2。
(1)通过计算判断挑战者能否越过壕沟。 (2)求挑战者在倾斜轨道上滑行的距离。(计算结果保留3位有效数字) 解析：(1)挑战者到达圆形轨道最高点时刚好对轨道无压力，在圆形轨道最
高点有mg＝mv2R
从圆形轨道最高点到D点的过程，由机械能守恒定律可得12 mv2D ＝12 mv2
＋2mgR，解得vD＝4 m/s
挑战者从D点做平抛运动，下落高度h时，有
h＝12 gt2，x＝vDt 可得x＝2 m>s＝1.5 m 所以挑战者能越过壕沟。 (2)设挑战者在倾斜轨道上滑行的距离为l，挑战者由静止沿倾斜轨道下滑过程，由动能定理得
mgl sin α－μmgl cos α＝12 mv2D 解得挑战者在倾斜轨道上滑行的距离l≈1.54 m。 答案：(1)见解析 (2)1.54 m 2．(2023·山东菏泽市二模)我国物流市场规模连续七年位列全球第一。某物流分拣中心为转运货物安装有水平传送带，传送带空载时保持静止，一旦有货物置于传送带上，传送带就会以1 m/s2的加速度向前加速运行。在传送带空载的某时刻，某质量为20 kg的货物向前以3 m/s的初速度滑上传送带。已知传送带长为6 m，货物和传送带之间的动摩擦因数为0.2，g取10 m/s2。求： (1)货物用多长时间到达传送带末端； (2)整个过程传送带对货物做的功； (3)传送带与货物由于摩擦产生的热量。 解析：(1)对货物受力分析，由牛顿第二定律可知 μmg＝ma′，解得a′＝2 m/s
写作限时训练1-6 答案
参考答案由 后 文 中 的 “ ｐｌｅｎｔｙ ｏｆ ｔｉｍｅ！” 可 判 断 ，作者 并 不 赶 时 间 ，所 以 快本 。
题 用 ｑｕｉｃｋｌｙ最 佳 。
下 来 等 ，这 里 就 谈 与 之 相 关 的 “ 攀 岩 ” 。
第 二 节本 文 主 要 介 绍 了 慢 跑 的 益 处 。
修 饰 名 词 ｗａｙ应 用 形 容 词 。
１．ｅｆｆｅｃｔｉｖｅ 考 查 词 性 转 换 。
５． ｃａｒｒｙｉｎｇ 考 查 非 谓 语 动 词 。
用 现 在 分 词 短 语 作 伴 随 状语 。
６． ｔｏ ｂｅｇｉｎ 考 查 非谓 语 动 词 。
搭 配 ，意 为 “ 将 要 做 某 事 ” 。
因 Ｉ与 ｃａｒｒｙ 是 主动 关 系 ，故 ｂｅ ａｂｏｕｔ ｔｏ ｄｏ ｓｔｈ为 固 定 因 个 句 子 用 ｗｈｉｃｈ。
考 查 连 词 。
２．ｗｈｉｃｈ 引 导 非 限 制 性 定 语 从 句 ，指代 前 面 整 ７． ａｓ／ｗｈｅｎ 考 查 连 词 。
因 “ Ｉｍａｄｅ ｍｙｗａｙ ｂａｃｋｓｔａｇｅ” 与 “ ｔｈｅ ｇｒｅａｔ ｍａｇｉｃｉａｎ ｗａｓ ｐｕｔｔｉｎｇ ｏｎ ｈｉｓ ｔｏｐ ｈａｔ” 都 是 句 子 ，两 句 之 间 没 有 连 词 ，必 定 填 连 词 ；再 根 据 句 意 和 两 句 子 间 的 逻 辑 关 系 ，应 填 表 示“ 当 … … 时 ” 的 ａｓ或 ｗｈｅｎ才 通 顺 。
３． ａｃｔｉｖｉｔｉｅｓ 考 查 名 词 的 数 。
ｏｔｈｅ意 为 “ 其 他 的 ” ， 常 用 于 修 饰 可 数 名 词 复 数 或 不 可 数 名 词 。
４． ｓｔａｒｔｉｎｇ 考 查 非谓 语 动 词 。
介 词 ｂ接 动 名 词 作 宾 语 ， 故 填 ５．ｓｔａｒｔｉｎｇｈｅｌｐｓ 。
８． ｗｈｉｓｐｅｒｅｄ 考 查 动 词的 时 态 。
在 句 中 作 谓 语 ，考 虑 时 态 语 态 ；Ｉ与 ｗｈｉｓｐｅｒ是 主 动 关 系 ，又 由 语 境 可 知用一般 过 去 时 ，故 填 ｗｈｉｓｐｅｒｅｄ。
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第六节 限时训练
一、选择题
1．下列说法正确的是( )
A．当线圈中电流不变时，线圈中没有自感电动势
B．当线圈中电流反向时，线圈中自感电动势的方向与线圈中原电流的方向相反
C．当线圈中电流增大时，线圈中自感电动势的方向与线圈中电流的方向相反
D．当线圈中电流减小时，线圈中自感电动势的方向与线圈中电流的方向相反
2．如图所示，L为自感系数较大的线圈，电路稳定后小灯泡正常发光，当断开开关S的瞬间会有( )
A．灯A立即熄灭
B．灯A慢慢熄灭
C．灯A突然闪亮一下再慢慢熄灭
D．灯A突然闪亮一下再突然熄灭
3. (选做题)如图所示，电感线圈L的自感系数足够大，其直流电阻忽略不计，LA、LB是两个相
同的灯泡，且在下列实验中不会烧毁，电阻R2阻值约等于R1的两倍，则( )
A．闭合开关S时，LA、LB同时达到最亮，且LB更亮一些
B．闭合开关S时，LA、LB均慢慢亮起来，且LA更亮一些
C．断开开关S时，LA慢慢熄灭，LB马上熄灭
D．断开开关S时，LA慢慢熄灭，LB闪亮一下后才慢慢熄灭
4．关于线圈的自感系数，下面说法正确的是( )
A．线圈的自感系数越大，自感电动势就一定越大
B．线圈中电流等于零时，自感系数也等于零
C．线圈中电流变化越快，自感系数越大
D．线圈的自感系数由线圈本身的性质及有无铁芯决定
5．(多选)无线电力传输目前已取得重大突破，在日本展出了一种非接触式电源供应系统．这种系统基于电磁感应原
理可无线传输电力．两个感应线圈可以放置在左右相邻或上下相对的位置，原理示意图如图所示．下列说法正确的
是( )
A．若A线圈中输入电流，B线圈中就会产生感应电动势
B．只有A线圈中输入变化的电流，B线圈中才会产生感应电动势
C．A中电流越大，B中感应电动势越大
D．A中电流变化越快，B中感应电动势越大
6．如图所示，闭合电路中的螺线管可自由伸缩，螺线管有一定的长度，灯泡具有一定的亮度．若
将一软铁棒从螺线管左边迅速插入螺线管内，则将看到( )
A．灯泡变暗 B．灯泡变亮
C．螺线管缩短 D．螺线管长度不变
7．(多选)如图所示的电路中，线圈L的自感系数足够大，其直流电阻忽略不计，A、B是两
个相同的灯泡，下列说法中正确的是( )
A．S闭合后，A、B同时发光且亮度不变
B．S闭合后，A立即发光，然后又逐渐熄灭
C．S断开的瞬间，A、B同时熄灭
D．S断开的瞬间，A再次发光，然后又逐渐熄灭
8．如图所示为测定自感系数很大的线圈L直流电阻的电路，L的两端并联一个电压表，用来测
量自感线圈的直流电压．在测量完毕后，将电路拆解时应( )
A．先断开S1 B．先断开S2
C．先拆除电流表 D．先拆除电压表
9. 如图所示电路中，A、B是相同的两小灯泡．L是一个带铁芯的线圈，电阻可不计，调节R，
电路稳定时两灯泡都正常发光，则在开关合上和断开时( )
A．两灯同时点亮、同时熄灭
B．合上S时，B比A先到达正常发光状态
C．断开S时，A、B两灯都不会立即熄灭，通过A、B两灯的电流方向都与原电流方向相同
D．断开S时，A灯会突然闪亮一下后再熄灭
10. 在如图所示的电路中，两个相同的小灯泡L1和L2分别串联一个带铁芯的电感线圈L和一个滑动变阻器R.闭合
开关S后，调整R，使L1和L2发光的亮度一样，此时流过两个灯泡的电流均为I.然后，断开S.若t′时刻再闭合S，
则在t′前后的一小段时间内，正确反映流过L1的电流i1、流过L2的电流i2随时间t变化的图象是( )
二、计算题
12．如图所示，电流表的内阻不计，电阻R1＝2.5 Ω，R2＝7.5 Ω，电感线圈的直流电阻可以
忽略．闭合开关S的瞬时，电流表的读数I1＝0.2 A；线圈中的电流稳定后，电流表的读数I
2
＝0.4 A，试求电池的电动势和内电阻．
13.如图甲所示为研究自感实验电路图，并用电流传感器显示出在t＝
1×10－3 s时断开开关前后一段时间内各时刻通过线圈L的电流(如图乙)．
已知电源电动势E＝6 V，内阻不计，灯泡R1的阻值为6 Ω，电阻R
的阻值为2 Ω.求：(1)线圈的直流电阻RL；(2)开关断开时，该同学观察到
的现象是什么？并计算开关断开瞬间线圈产生的自感电动势是多少？
14.（选做）如图所示，一对光滑的平行金属导轨固定在同一水平面内，导轨间距l=0.5m，左端接有阻值R=0.3Ω的
电阻，一质量m=0.1kg，电阻r=0.1Ω的金属棒MN放置在导轨上，整个装置置于竖直向上的匀强磁场中，磁场的
磁感应强度B=0.4T．棒在水平向右的外力作用下，由静止开始以a=2m/s2的加速度做匀加速运动，当棒的位移x=9m
时撤去外力，棒继续运动一段距离后停下来，已知撤去外力前后回路中产生的焦耳热之比Q1：Q2=2：1．导轨足够
长且电阻不计，棒在运动过程中始终与导轨垂直且两端与导轨保持良好接触．求：
（1）棒在匀加速运动过程中，通过电阻R的电荷量q； （2）撤
去外力后回路中产生的焦耳热Q2； （3）外
力做的功WF．
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