初中学生科普英语竞赛-模拟题1.doc

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. hopeless B. useless C. helpless D. legless 2. That new experiment building _ an area of 5000 square meters. A. includes B. holds C. takes D. covers3. People should get _ of sleep as they need to feel rested. A. as many hours B. as much hours C. so much hour D. so many hour4. The phenomenon of luck is not all down to chance, but is affected by a persons _disposition. A. general B. gentle C. generous D. giant5. The age of fossils can be found by a process _ carbon dating. A. being called B. called C. calling D. to call6. Suddenly the battery on your mobile phone has _, you cant 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 in B. break through C. break up D. break down8. There is no proof that _ sleep will _ life. A. short length B. shorten lengthC. shortened lengthen D. shortening lengthen9. The project team believes such computer would _in teaching and learning. A. play a major function B. perform a main functionC. play a major role D. display a main role10. Once a heart disease has seriously weakened a patients heart, heart _ can be performed to save his life. A. transplants B. transportation C. translations D. transforms11. When readers were asked _ animals should be used for medical research, nearly 80 percent said yes. A. which B. what C. where D. whether12. Feelings of pain _ when signals from nerve endings in the skin are sent to the brain. A. record B. resource C. result D. rescue13. The scientist performed his experiment over and over again, _ till midnight. A. worked B. working C. to work D. have to work14. Fourteen boys in the class shaved their heads after learning that their friend would lose his hair after receiving drug _ for cancer. A. trades B. treatments C. treasures D. tracks15. The government passed the laws to protect the plants and animals on the _ species list. A. endangered B. dangerous C. endangering D. 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 up B. look up C. pick up D. open up17. Can I _your dictionary? -Sony, Im using it. A. borrow B. lend C. keep D. return18. _ me carefully, boys and girls. Can you _ me clearly.9 A. Listen to, hear from B. Hear, listen to C. Hear, hear D. Listen to, hear19. Let the children go away. Theyre making to much _ here. A. noise B. voice C. sounds D. songs20. The students put down their pens when the teacher_ them to stop writing. A. said B. spoke C. told D. talked21. He _ living in the country to the city. A. likes B. prefers C. enjoys D. loves22. Many girls like _ skirts in summer. A. wearing B. dressing C. in D. putting on23 If you don t know a word, you can _ the word in a dictionary. A. look up B. look down C. look over D. look out24 Mr Li would like to _ us an interesting story. A. tell B. talk C. say D. speak25. _ alway the old books and _ me that new one. A. Bring, bring B. Bring, take C. Take, take D. Take, bring26. - I m going to school now, Mum, Bye. - Just a minute. Its cold outside, _ your coat, please. A. Put on B. Take off C. Put up D. Take down27. It is better to teach a man to fish than _ him fish. A. to give B. giving C. to find D. finding28. This TV set is too loud, will you please _? A. turn down it B. turn it down C. to turn it down D. to turn down it29. It will be warmer tomorrow. The temperature will _ again. A. fall below B. go up C. stay above D. keep on30. Dick isnt here. He _ the cinema. A. has gone to B. has been to C. has been away D. 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 the insects do not seem to spread the virus.In an 31 , mosquitoes that fed on blood 32 with the AIDS virus were later found to have the virus in their bodies. 33 , the mosquitoes did not seem to pass 34 the virus to a sample of uninfected blood when the mosquitoes fed on that sample. Similar experiments 35 recently in South Africa have 36 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. experienceB. experimentC. exampleD. explanation32.A. to infectB. infectC. infectingD. infected33.A. HoweverB. MoreoverC. ThereforeD. Besides34.A. onB. byC. offD. for35.A. concludedB. combinedC. conductedD. concentrated36.A. processedB. producedC. progressedD. promoted37.A. accordingB. dueC. owingD. similar38.A. toB. likeC. forD. as39.A. stillB. evenC. farD. much40.A. slowB. spreadC. speedD. stopPassage 2All the useful energy at the surface of the earth comes from the activity of the sun. The sun heats and 41 mankind. Each year it provides men 42 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 seasons 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. It flows down the mountains and is converted to electric power. Light transmits only the energy 47 comes from the suns outer layers, and 48 of this energy that is directly toward the earth never arrives. About 49 of it is absorbed by the atmosphere of the earth. 50 , the earth itself gets only one half-billionth of the suns entire output of radiant energy.41.A.warmsB.feedsC.fuelsD.supplies42.A.forB.byC.withD.to43.A.nativeB.neatC.naturalD.normal44.A.fromB.byC.atD.in45.A.beforeB.afterC.everD.ago46.A.turnedB.was turnedC.turningD.turns47.A.andB.thatC.whenD.where48.A.a numberB.moreC.manyD.much49.A.ninths-tenB.ninth-tensC.nine-tenthsD.nines-tenth50.A.In useB.In factC.In additionD.In operationPART IV Reading Comprehension (阅读理解) (40分)Passage 1Language isnt 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 memory - its amazing,” says Dr. Sherry.Dr. Sherry says that memory in many animals is associated with an area in the brain called the hippocampus. He found that food-storing birds have a larger hippocampus than birds that dont store food. Hippocampus damage is one sign of Alzheimers disease, a brain degenerative disease marked by a failing memory.51. What 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. Nutcracker is a kind of bird that _. A. stores seeds in the ground B. sings very nicely C. flies to north in winter daysD. works diligently53. When spring arrives, the bird _. A. returns from north B. flies back to find the stored food C. starts to build its new homeD. becomes busy in collecting seeds54. According to Dr. Sherry, if ones hippocampus is hurt, he may_ .A. lose his ability to talk B. become very forgetful C. die very soon D. become easy to get angry55. The 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.Gordons vehicle hit the big 2 million at a TV ceremony held in Times Square in New York City. To what does Gordon owe his cars 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.Gordons 2 million miles on the road have taken him almost everywhere in the United States, as well as to Canada, Mexico, and Europe. “Whether I drive 3 million is more up to me than it is the car,” he said. “The cars parts may be able to take it, but Im not so sure about my own.”56. From the passage we can guess that _.A. its 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 Citys Times SquareD. no accidents have ever taken place with Gordons car67. The main cause of the cars long life lies in _.A. Gordons careful serviceB. Gordons 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 Gordons car have been replaced.B. Some of the cars 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. hes no longer as strong as he was youngB. his car may survive for no less than ten yearsC. he worries much about his carD. hell 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 felt as if theyd walked in circles for hours before help arrived. That detail attracted Andreas 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 questions fueled Andreas 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:n Eyes allow people to see their route.n Structures in the middle ear affect a persons sense of balance.n The brain controls whether a persons 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 dont know where theyre 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 Andreas research is to find _.A. why people walk in circlesB. why runners usually run in circlesC. whether lost people walk in circlesD. how can lost people find their place72. From where did Andrea get her idea to do her 10-grade science project?A. From her textbook.B. From a news report.C. From a science report.D. From an experiment.73. Andrea found from her research that the most important organ controlling direction is _.A. the brainB. the middle ear C. the eyesD. Both eyes and middle ear74. Andreas research concludes that people who dont know where theyre going are in the habit of walking _.A. leftwardsB. rightwardsC. either left or rightD. neither left nor right75. Which of the following statements is TRUE according to the passage?A. If you are lost in a desert, youd better stay where you are.B. Ones middle ear is the only organ to keep him in balance.C. Lost people can hardly find their way without a compass.D. The force made by ones two feet is different when one walks.Passage 4Tears are natures 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 unique to human. We know that animals also experience emotionfear, pleasure, lonelinessbut they do not shed tears. 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 b