初赛试卷
(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 Error Detection (辨错) (20分)
1.Studies show that visual information taking in by the left eye follows a neural
A B C
pathway that crosses over to the right hemisphere.
D
2. Light, just as radio waves, X-rays and so on, is a kind of electromagnetic waves.
A B C D
3.Scientists search for the places where prehistoric people might live.
A B C D
4.Baby ants need a great number of care and attention as do some other baby
A B C D
insects and animals.
5.The temperature has fallen below zero. If you went outside without winter clothes,
A B C
you will freeze before long.
D
6.Many people left good jobs in cities to try their luck at gold mining, but not many
A B C
successful.
D
7.The cave, say the archeologists, had used for hundreds of thousands of years by
A B C
ancestors of humans and by ape-men.
D
8. Results from new studies show that sea turtles migrate between feeding and nesting A B C
sites by sense the direction of ocean waves.
D
9.Many ocean experts remain that stronger laws are needed to limit damage to the
A B C
ocean’s environment.
D
10.Many scientists say that one of man’s greatest error has been to equate growth with
A B C D
advancement.
11.Researchers are studying these microbes as a way to help clear up lakes and rivers.
A B C D
12.According to many AIDS experts, scientists are closer than ever to find a way to make
A B C
AIDS a controllable disease rather than a fatal one.
D
13.To avoid to be seen by its enemies, the squid uses its natural flashlight, a light-emitting
A B
organ, to shine light on the underside of its body.
C D
14.Under the proper conditions, decomposers can reduce pile of trash to almost nothing
A B C
and transplant some of it into fertile soil.
D
15.When shoppers buy plastic trash bags in a supermarket, labels on the bag carton
A
may say “recyclable”, “biodegradable” or some other environmental sensitive terms.
B C D
16.For instance, some fish lay thousands of eggs at a time, most of them are eaten.
A B C D
17.According to one theory, the more offspring an animal species produces, the great will
A B C
be the chance that the species can survive.
D
18.So there must be other way to explain why females are so often larger than males.
A B C D
19.Mary felt sad seeing children drinking cola and throw milk away.
A B C D
20.Edmund King said the study showed that “not only the loud music is a nuisance to
A B
others, it could also be the cause of accidents”.
C D
PART II Multiple Choice (选择填空) (20分)
21.When the ants are first hatched , they are very small and _____.
A. hopeless B. useless C. helpless D. legless
22.That new experiment building _____ an area of 5000 square meters.
A. includes B. holds C. takes D. covers
23.People should get _____ of sleep as they need to feel rested.
24.The phenomenon of luck is not all down to chance, but is affected by a person’s _____disposition.
A. general Bgenerous D. giant
25.The age of fossils can be found by a process _____ carbon dating.
A. being called B. called C. calling D. to call
26.Suddenly the battery on your mobile phone has _____, you can’t make any call for help. B. run after C. run off D. run out
27.When a plant or animal dies, the carbon 14 in the cells begins to _____.
A. break in B C D. break down
28.There is no proof that _____ sleep will _____ life.
29.The project team believes such computer would _____in teaching and learning.
A. play a major function B. perform a main function
C D. display a main role
30.Once a heart disease has seriously weakened a patient’s heart, heart _____ can be performed to save his life.
A B. transportation
C D. transforms
31.When readers were asked _____ animals should be used for medical research, nearly 80 percent said yes.
A B C. where D. whether
32.Feelings of pain _____ when signals from nerve endings in the skin are sent to the brain.
Asource CD. rescue
33.The scientist performed his experiment over and over again, ______ till midnight.
A w C D. have to work
34.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. tracks
35.The government passed the laws to protect the plants and animals on the _____ species list.
A B. dangerous C. endangering D. danger
36.Cucumber beetles, which, _____, could produce 33 million rootworms – a serious agricultural pest.
A B. if allowing to lie eggs
C D. if to allow lying eggs
37.French scientists have found that the moon has another unexpected _____: it affects the earth’s climate.
A. insignificance B. influence struction i
38.Everything we eat and drink contains some salt; we can meet the body’s need for it from natural sources without __________ the salt bottle.
A B. turning to C. keeping out D. putting away
39.However, the young whale’s _____ health continued to test Yip, a marine scientist and his friends.
A C. sensitive ar
40.A discovery in the North Sea in Europe has led some scientists _____ that gas bubbles rising from the seafloor might have destroyed some of the ships in Bermuda Triangle.
A. theorize B. to theorize C. theorized D. theorizing
PART III Cloze (完形填空) (20 分)
Passage 1
A 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 41 , mosquitoes that fed on blood 42 with the AIDS virus were later found to have the virus in their bodies. 43 , the mosquitoes did not seem to pass 44 the virus to a sample of uninfected blood when the mosquitoes fed on that sample. Similar experiments 45 recently in South Africa have 46 the same results.
The AIDS virus can stay in a mosquito for two or three days, 47 to the experiment. While in the mosquito, the virus does not multiply. Thus, the mosquito might be viewed 48 a momentary flying syringe, that probably carries 49 too little AIDS virus to 50 the infection.
| 41. | A. experience | B. experiment | C. example | D. explanation |
| 42. | A. to infect | B. infect | C. infecting | D. infected |
| 43. | A. However | B. Moreover | C. Therefore | D. Besides |
| 44. | A. on | B. by | C. off | D. for |
| 45. | A. concluded | B. combined | C. conducted | D. concentrated |
| 46. | A. processed | B. produced | C. progressed | D. promoted |
| 47. | A. according | B. due | C. owing | D. similar |
| 48. | A. to | B. like | C. for | D. as |
| 49. | A. still | B. even | C. far | D. much |
| 50. | A. slow | B. spread | C. speed | D. stop |
All the useful energy at the surface of the earth comes from the activity of the sun. The sun heats and 51 mankind. Each year it provides men 52 two hundred million tons of grain and nearly ten million tons of wood.
Coal, oil, 53 gas, and all other fuels are stored-up energy 54 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 55 .
Even waterpower comes from the sun. Water 56 into vapor by the sun falls as rain. It flows down the mountains and is converted to electric power.
Light transmits only the energy 57 comes from the sun’s outer layers, and 58 of this energy that is directly toward the earth never arrives. About 59 of it is absorbed by the atmosphere of the earth. 60 , the earth itself gets only one half-billionth of the sun’s entire output of radiant energy.
| 51. | A. | warms | B. | feeds | C. | fuels | D. | supplies |
| 52. | A. | for | B. | by | C. | with | D. | to |
| 53. | A. | native | B. | neat | C. | natural | D. | normal |
| 54. | A. | from | B. | by | C. | at | D. | in |
| 55. | A. | before | B. | after | C. | ever | D. | ago |
| 56. | A. | turned | B. | was turned | C. | turning | D. | turns |
| 57. | A. | and | B. | that | C. | when | D. | which(where) |
| 58. | A. | a number | B. | more | C. | many | D. | much |
| 59. | A. | ninths-ten | B. | ninth-tens | C. | nine-tenths | D. | nines-tenth |
| 60. | A. | In use | B. | In fact | C. | In addition | D. | In operation |
Passage 1
Language 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 memory --- it’s 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 don’t store food. Hippocampus damage is one sign of Alzheimer’s disease, a brain degenerative disease marked by a failing memory.
61.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.
62.Nutcracker is a kind of bird that _____.
A. stores seeds in the ground
B. sings very nicely
C.flies to north in winter days
D.works diligently
63.When spring arrives, the bird _____.
A. returns from north
B. flies back to find the stored food
C. starts to build its new home
D. becomes busy in collecting seeds
.According to Dr. Sherry, if one’s hippocampus is hurt, he may_____ .
A. lose his ability to talk
B. become very forgetful
C. die very soon
D. become easy to get angry
65.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 2
car Volvo P1800. Today, Gordon, now retired, still owns the same Volvo. Last March, he put the 2 millionth mile on the car.
TV ceremony held in Times Square in New York City.
owe his car’s very long life?
strong cars,” he said. “Also, I drive sensibly. And I take very good care of the car.”
(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.
(刹车), and the water pump, have been rebuilt or replaced.
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 car’s parts may be able to take it, but I’m not so sure about my own.”
66.From the passage we can guess that _____.
A. it’s very rare for a car to drive two million miles
B. the story has been written to introduce a new car
C. there were a car show at the New York City’s Times Square
D. no accidents have ever taken place with Gordon’s car
67. The main cause of the car’s long life lies in _____.
A. Gordon’s careful service
B. Gordon’s special knowledge of cars
C. the excellent quality of the car
D. the good quality of the oil he uses
68. 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 world
B. both home and abroad
C. mostly around the town he lives in
D. on both American continents
70. By the last two sentences Gordon wants to say that _____.
A. he’s no longer as strong as he was young
B. his car may survive for no less than ten years
C. he worries much about his car
D. he’ll try hard to reach the goal of 3 million miles
Passage 3
Last 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 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?”
th-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.
(步态)show that the dominant foot pushes off with a greater force, which pushes the runner slightly right or left,” she explains.
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.why people walk in circles
B.why runners usually run in circles
C.whether lost people walk in circles
D.how can lost people find their place
72. 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 brain
B.the middle ear
C.the eyes
D.Both eyes and middle ear
74. Andrea’s research concludes that people who don’t know where they’re going are in the habit of walking _____.
A.leftwards
B.rightwards
C.either left or right
D.neither left nor right
75. Which of the following statements is TRUE according to the passage?
A.If you are lost in a desert, you’d better stay where you 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.The force made by one’s two feet is different when one walks.
Passage 4
Tears 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 unique to human. We know that animals also experience emotion—fear, pleasure, loneliness—but 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 by a gland(腺)in the body.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 to the 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 a chemical 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 formed in .
A. the sea B. lakes C. rivers D. mountains
77. Which of the following functions have nothing to do with tears?
A. Biological function B. Emotional function
C. Physical function D.Chemical function
78. 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. escape B. produce C. replace D. remove
80. 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.下载本文