初中学生科普英语竞赛模拟题11

初中学生科普英语竞赛（请把你选中的答案A、B、C或D做在答题卡或答题纸的规定位置上。

）PART I Science Knowledge (15分)Directions: There is only one correct answer. Mark the corresponding letter on the Answer Sheet.1.When the ants are first hatched, they are very small and _____.A. hopelessB. uselessC. helplessD. legless2.That new experiment building _____ an area of 5000 square meters.A. includesB. holdsC. takesD. covers3.People should get _____ of sleep as they need to feel rested.A. as many hoursB. as much hoursC. so much hourD. so many hour4.The phenomenon of luck is not all down to chance, but is affected by a person’s _____disposition.A. generalB. gentleC. generousD. giant5.The age of fossils can be found by a process _____ carbon dating.A. being calledB. calledC. callingD. to call6.Suddenly the battery on your mobile phone has _____, you can’t make any call for help. A. run down B. run after C. run off D. run out7.When a plant or animal dies, the carbon 14 in the cells begins to _____.A. break inB. break throughC. break upD. break down8.There is no proof that _____ sleep will _____ life.A. short… lengthB. shorten… lengthC. shortened … lengthenD. shortening … lengthen9.The project team believes such computer would _____in teaching and learning.A. play a major functionB. perform a main functionC. play a major roleD. display a main role10.O nce a heart disease has seriously weakened a patient’s heart, heart _____ canbe performed to save his life.A. transplantsB. transportationC. translationsD. transforms11.W hen readers were asked _____ animals should be used for medical research, nearly 80 percent said yes.A. whichB. whatC. whereD. whether12.F eelings of pain _____ when signals from nerveendings in the skin are sent to the brain.A. recordB. resourceC. resultD. rescue13.T he scientistperformed his experiment over and over again, ______ till midnight.A. workedB.workingC. to workD. have to work14.F ourteen boys in the class shaved their heads after learning that their friend would lose his hair after receiving drug _____ for cancer.A. tradesB. treatmentsC. treasuresD. tracks15.T he government passed the laws to protect the plants and animals on the _____ species list.A. endangeredB. dangerousC. endangeringD. dangerPART II Grammar & Vocabulary (15分)Directions: There is only one correct answer for each sentence. Mark the corresponding letter on the Answer Sheet.16. More and more foreigners want to _______their companies in Zhejiang.A. clean upB. look upC. pick upD. open up17. Can I ______your dictionary? --Sony, I'm using it.A. borrowB. lendC. keepD. return18A. Listen to, hear fromB. Hear, listen toC. Hear, hearD. Listen to, hear19. Let the children go away. They're making to much _______ here.A. noiseB. voiceC. soundsD. songs20. The students put down their pens when the teacher_____ them to stop writing.A. saidB. spokeC. toldD. talked21. He ________ living in the country to the city.A. likesB. prefersC. enjoysD. loves22. Many girls like __________ skirts in summer.A. wearingB. dressingC. inD. putting on23 If you don' t know a word, you can ________ the word in a dictionary.A. look upB. look downC. look overD. look out24 Mr Li would like to _________ us an interestingstory.A. tellB. talkC. sayD. speak25. _________ alway the old books and __________ me that new one.A. Bring, bringB. Bring, takeC. Take, takeD. Take, bring26.-- I' m going to school now, Mum, Bye.-- Just a minute. It's cold outside, _________ your coat, please.A. Put onB. Take offC. Put upD. Take down27. It is better to teach a man to fish than ________ him fish.A. to giveB. givingC. to findD. finding28. This TV set is too loud, will you please _________?A. turn down itB. turn it downC. to turn it downD. to turn down it29. It will be warmer tomorrow. The temperature will _________ again.A. fall belowB. go upC. stay aboveD. keep on30. Dick isn't here. He _________ the cinema.A. has gone toB. has been toC. has been awayD. has been withPART III Cloze (完形填空) (20 分)Passage 1A new study has shown that mosquitoes can carry AIDS viruses in their bodies for a few days, but theinsects do not seem to spread the virus.In an31 , mosquitoes that fed on blood 32with the AIDS virus were later found to have the virus in their bodies.33 , the mosquitoes did not seem to pass34 the virus to a sample of uninfected blood when the mosquitoes fed on that sample. Similar experiments35 recently in South Africa have36 the same results.The AIDS virus can stay in a mosquito for two or three days,37 to the experiment. While in the mosquito, the virus does not multiply. Thus, the mosquito might be viewed 38 a momentary flying syringe, that probably carries 39 too little AIDS virus to 40 the infection.31. A.experience B.experimentC. exampleD.explanation32. A. to infect B. infect C. infecting D. infected33. A. However B.Moreover C.ThereforeD. Besides34. A. on B. by C. off D. for35. A. B. C. D.concluded combined conducted concentrated36. A.processed B.producedC.progressedD. promoted37. A.accordingB. dueC. owingD. similar38. A. to B. like C. for D. as39. A. still B. even C. far D. much40. A. slow B. spread C. speed D. stopPassage 2All the useful energy at the surface of the earth comes from the activity of the sun. The sun heats and41 mankind. Each year it provides men42 two hundred million tons of grain and nearly ten million tons of wood.Coal, oil, 43 gas, and all other fuels are stored-up energy 44 the sun. Some was collected by this season’s plants as carbon compounds (碳化合物). Some was stored by plants and trees ages 45 .Even waterpower comes from the sun. Water 46 into vapor by the sun falls as rain. Itflowsdown themountains and is converted to electric power.Light transmits only the energy 47 comes from thesun’s outer layers, and 48 of this energy that isdirectly toward the earth never arrives. About49 of it is absorbed by the atmosphere of the earth. 50 , the earthitself gets only one half-billionth of the sun’s entireoutput of radiant energy.41. A.warms B.feeds C.fuels D.supplies42. A.for B.by C.with D.to43. A.native B.neat C.natural D.normal44. A.from B.by C.at D.in45. A.before B.after C.ever D.agoC.turningD.turns46. A.turned B.wasturned47. A.and B.that C.when D.where48. A. a number B.more C.many D.much49. A.ninths-ten B.ninth-tens C.nine-tenths D.nines-tenth50. A.In use B.In fact C.In addition D.InoperationPART IV Reading Comprehension (阅读理解) (40分)Passage 1Language isn’t the only sign of animal intelligence.A Canadian psychologist, Dr. David Sherry, has studied the remarkable memory of nutcracker, a bird that stores food，mostly pine seeds, in tiny caches, or holes, in the ground. A native of western North America, one nutcracker makes 100 to 200 separate caches every day in the fall and winter. When spring arrives, the bird returns to these caches to eat the seeds.Dr. Sherry says that months after burying the seeds, the birds remember exactly where they stored them. They fly directly to the holes with no need to hunt and peck. “These birds have a highly specialized spatial me mory --- it’s amazing,” says Dr. Sherry.Dr. Sherry says that memory in many animals is associated with an area in the brain called thehippocampus. He found that food-storing birds have a larger hippocampus than birds that don’t store food. Hippocampus damage is one sign of Alzheimer’s disease, a brain degenerative disease marked by a failing memory.51.W hat does the passage mainly discuss?A. Some kinds of birds have excellent memory.B. How birds store food in the ground.C. How birds find their stored food.D.Why birds like to bury seeds in the ground.52.N utcracker is a kind of bird that _____.A. stores seeds in the groundB. sings very nicelyC.flies to north in winter daysD.works diligently53.W hen spring arrives, the bird _____.A. returns from northB. flies back to find thestored foodC. starts to build its new homeD. becomes busy in collecting seeds54.A ccording to Dr. Sherry, if one’s hippocampus is hurt, he may_____ .A. lose his ability to talkB. become very forgetfulC. die very soonD.become easy to get angry55.T he phrase“associated with”in the last paragraph has the same meaning as_____?A. “linked to”B. “covered with”C. “located at”D. “stored in”Passage 2Gordon was a 25-year-old science teacher in 1966 when he bought a brand-new car Volvo P1800. Today, Gordon, now retired, still owns the same Volvo. Last March, he put the 2 millionth mile on the car.Gordon’s vehicle hit the big 2 million at a TV ceremony held in Times Square in New York City.To what does Gordon owe his car’s very long life?“Volvos are very strong cars,” he said. “Also, I drive sensibly. And I take very good care of the car.”Gordon changes the oil every 3,000 miles; uses only the same brand of oil; changes the spark plugs（火花塞）every 20,000 miles; washes the car regularly; waxes it at least twice a year; and spends a few minutes each week checking under the hood (车篷), among other things.“Being a science teacher, I have a better idea of the ways things work,”he said.Gordon says the vehicle still has many of its original parts. But many parts, such as the starter motor, the brakes（刹车）, and the water pump, have been rebuilt or replaced.Gordon’s 2 million miles on the road have taken him almost everywhere in the United States, as well as to Canada, M exico, and Europe. “Whether I drive 3 million is more up to me than it is the car,” he said. “The car’s parts may be able to take it, but I’m not so sure about my own.”56.F rom the passage we can guess that _____.A. it’s very rare for a car to drive two million milesB. the story has been written to introduce a new carC. there were a car show at the New York City’s Times SquareD. no accidents have ever taken place withGordon’s car67. The main cause of the car’s long life lies in _____.A. Gordon’s c areful serviceB. Gordon’s special knowledge of carsC. the excellent quality of the carD. the good quality of the oil he uses68. Which of the following statements is TRUE according to the passage?A. All the parts of Gordon’s car have been replaced.B. Some of the car’s parts can last even longer time.C. Volvo cars are stronger than Japanese ones.D. Science teachers can usually keep their cars longer.69. Gordon has driven his Volvo _____.A. all over the worldB. both home and abroadC. mostly around the town he lives inD. on both American continents70. By the last two sentences Gordon wants to say that _____.A. he’s no longer as strong as he was youngB. his car may survivefor no less than ten yearsC. he worries much about his carD. he’ll try hard to reach the goal of 3 million milesPassage 3Last summer, 16-year-old Andrea Axtell read an interesting article in the papers: A family had walked aimlessly in an Arizona desert after their car broke down.Family members said they fel t as if they’d walked in circles for hours before help arrived. That detail attracted Andrea’s interest. “Without a compass or specific landmarks, do people who get lost end up walking in circles?” she wondered. “And if they do, why?”These simple questio ns fueled Andrea’s 10th-grade science project. Hungry for answers, she went to the library to conduct background research. Among many facts, she discovered that several body organs control direction and movement. For example:⏹Eyes allow people to see their route.⏹Structures in the middle ear affect a person’s sense of balance.⏹The brain controls whether a person’s right side or left side is dominant（主导的）, or exerts more control.“Studies of runners’ strides（步态）show that the dominant foot pushes off with a greater force, which pushes the runner slightly right or left,” she explains.Armed with this information, Andrea started an experiment to test whether people who don’t know where they’re going end up walking in circles. And several months later, that experiment got a prize at the Intel International Science and Engineering Fair（ISEF）!71. The aim of Andrea’s research is to find _____.A.w hy people walk in circlesB.why runners usually run in circlesC.whether lost people walk in circlesD.h ow can lost people find their place72. From where did Andrea get her idea to do her 10-grade science project?A.F rom her textbook.B.From a news report.C.From a science report.D.F rom an experiment.73. Andrea found from her research that the most important organ controlling direction is _____.A.t he brainB.the middle earC.the eyesD.B oth eyes and middle ear74. Andrea’s research concludes that people who don’t know where they’re going are in the habit of walking _____.A.l eftwardsB.rightwardsC.either left or rightD.n either left nor right75. Which of the following statements is TRUE according to the passage?A.I f you are lost in a desert, you’d better stay whereyou are.B.One’s middle ear is the only organ to keep him in balance.C.Lost people can hardly find their way without a compass.D.T he force ma de by one’s two feet is different when one walks.Passage 4Tears are nature’s way of making us feel more comfortable. When our eyes are made uncomfortable by some small pieces of pollution,or when we are cutting onions,or when we are tired and “red-eyes” from overwork at late hours, tears form in our eyes to clean and refresh them.Tears are also a sign of strong emotion. We cry when we are sad and we cry when we are happy.And tears seem to be uniqueto human. We know that animals also experience emotion—fear,pleasure,loneliness—but they do not shedtears. From this we can conclude that tears are closely related to the emotional and biological make-up of the human species.Biologically speaking, tears are actually drops of a slightly salty fluid, produced by a gland（腺）in thebody.Because salt is an important component（成分）, tears may actually make up the most conclusive evidence that the human animal is the end product of a long evolutionary（进化的）process that began in the sea.And it is clear, that, in addition tothe emotional benefits, the shedding of tears has a specific biological function as well. Through tears, we can eliminate from our body certain chemicals which build up in response to stress and create achemical imbalance in the body. Crying actually makes us feel better by correcting that imbalance and making us feel good again. And thus the emotional and the biological functions of tears mix into one and make us even more “human” than we would otherwise be.76. According to the passage,human beings may have first formedin.A. the seaB. lakesC. riversD. mountains77. Which of the following functions have nothing to do with tears?A. Biological functionB. Emotional functionC. Physical functionD.Chemical function78. According to the article, which of the following is unique to humans?A. The feeling of loneliness.B. The ability of evolution.C. The ability to shed tears.D. The feeling of fear.79. The word “eliminate” in the last paragraph most probably means .A. escapeB. produceC. replaceD. remove80. Which of the following is the main idea of the passage?A. Tears are a sign of strong emotion.B. Tears are always making us feel more comfortable.C. Tears are unique to human.D. Tears have certain biological function.。