.Its tiny eyes the cabbage, the creature’s interest in the vegetable.A．are fixed on,showB．are fixed upon,showing C．fix on,showingD．fix upon,showing 题目和参考答案——青夏教育精英家教网—

题目内容

.Its tiny eyes_____the cabbage,_____the creature’s interest in the vegetable.

A．are fixed on,show	B．are fixed upon,showing
C．fix on,showing	D．fix upon,showing

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A Battery’s Nightmare

Portable electronics that can be carried about easily are only as good as their batteries (电池) and, let’s face it, batteries aren’t very good, especially when compared with, say, petrol, which packs 100 times a battery’s energy into an equal space. That’s why a large group of mechanical engineers (centered at the Massachusetts Institute of Technology, but with partners at other universities and companies) are hard at work in an effort to replace batteries with a tiny engine that runs on fuel. Imagine a battery-free life! When the fuel runs out in your mobile phone, you just fill up and go.

The engine---about the size of a ten-cent coin---starts with a combustion chamber (燃烧室) that burns hydrogen. Its tiny parts are etched (蚀刻) onto silicon wafers (硅片) in the same manner that computer parts are etched onto integrated circuits (集成电路). The first engine is made up of five wafers. And since these wafers could be produced in much the same way as computer chips, they could probably be produced quite cheaply.

But the devil in all this nice detail is efficiency. Tiny engine parts don’t always behave like the bigger parts of the first engine. Something between the parts can slow down the works, according to Columbia University Professor LucFrechette, one of the engine’s designers. Extreme heat from the combustion chamber is also a problem, often leaking to other parts of the engine.

The scientists’ goal is to create an engine that will operate 10 times better than batteries operate. Frechette says that a complete system, with all parts in place and working, will be set up in the next couple of years, but commercial models aren’t likely until at least the end of the next ten years.

According to the passage, the title suggests that _______ .

A. batteries should be greatly improved

B. petrol will be used instead of batteries

C. the time of batteries will be gone forever

D. pollution problems caused by batteries must be solved

What’s the meaning of the underlined word “devil” in paragraph 3?

A. Problem B. Advantage C. Invention D. Technique

What can we infer from the passage?

A. The new invention doesn’t need any fuel.

B. The new engine has been produced in large quantities.

C. The new invention is much cheaper than the battery.

D. The new engine needs to be improved before it’s on sale.

　　For years scientists have been worried about the effects of air pollution on the earth’s natural conditions. Some believe the air inside many houses may be more dangerous than the air outside. It may be one hundred times worse.

　　Indoor air pollution can cause a person to feel tired, to suffer eye-pain, headache and other problems. Some pollutants（污染物） can cause breathing disorders, diseases of blood and even cancer, Most scientists agree that every modern house has some kind of indoor pollution. People began to notice the problem in the early 1970s. It is that when builders began making houses and offices they did not waste energy. To do this they built buildings that limited the flow of air between inside and outside. They also began using manmade building materials. These materials are now known to let out harmful gases. As the problem became more serious, scientists began searching for a way to deal with it. They discovered a natural pollution control system for building— green plants. Scientists do not really know how plants control air pollution. They believe that a plant’s leaves absorb or take in the pollutants. In exchange the plant lets out oxygen through its leaves and through its tiny organizations on its roots. Scientists suggest that all buildings should have one large plant or several small plants inside for every nine square metres of space. Studies of different plants show that each absorbs different chemicals. So the most effective way to clean the air is to use different kinds of plants. Having green plants inside your house can make it a prettier and more healthy place.

　　Generally speaking, indoor air pollution may be more harmful than the air outside because ________.

　　A. the man - made building materials let out dangerous gases inside houses

　　B. there may be more harmful gases outside houses

　　C. the flow of air indoors is limited

　　D. indoor air pollution can make a person seriously ill

　　The most effective way to clean the air is to use different kinds of plants because________.

　　A. they may let out more oxygen which people need

　　B. they can absorb different kinds of the harmful indoor chemicals

　　C. they can take in all kinds of indoor pollutants

D. they can make your house prettier and more healthy

Yesterday, after telling my brother, Rhys, and me to stop playing like wild animals, Mom went to take a bath. We were having a pillow fight when 　36 one hit a vase. Mom 　37 the loud crash. Wasting no time, she came 　38 into the room. I was sure that she was going to shout at us, but instead she just knelt by the 39 and began to cry.

　 This made Rhys and me feel pretty 　40 . We went over and put our arms around her, and she explained to us why she was so upset. In the pieces 　41 a broken glass rose, one petal (花瓣)gone, which was given by Dad on their first wedding anniversary. Dad had said that if he ever forgot to bring flowers home 　42 an anniversary in the future, Mom was to look at that one. It was like their love—it would last a 　43 .

　 We began crying, and 　44 to glue it. But Mom said that wouldn’t really fix it. 　45 it had been broken, the 　46 of the “limited edition” had reduced. As Mom 　47 began to pick up the mess, we tried everything we could think of to　 48 her up, but even our best funny faces didn’t 　49 . Tears kept coming down her cheeks. Everything was picked up. Seeing Mom going back to the bath, I 　50 her and put both hands on her shoulders, saying, “All things can be 　51 ，Mom. The only thing that cannot be broken is our 　52 . It’s the only thing that can never be broken. ”

　 Mom hugged me very tightly and 　53 smiled. After dinner that night, Mom glued the petal back onto the rose. Then she softly said, “My rose is truly unique. Its tiny damage reminds me of 　54 more important：the realization that love 　55　 forever. ”

36. A. gradually　　　　　　　　　　　　　　　　　　　　　　　 B. suddenly

C. surprisingly　　　　　　　　　　　　　　　　　　　　　　　　　　　 D. immediately

37. A. caused　　　　　　　　　　　　　　　　　　　　　　　　　 B. witnessed

C. heard　　　　　　　　　　　　　　　　　　　　　　　　　　　　 D. ignored

38. A. dressing　　　　　　　　　　　　　　　　　　　　　　　　 B. shouting

C. flying　　　　　　　　　　　　　　　　　　　　　　　　　　　　 D. crying

39. A. pieces　　　　　　　　 B. vase　　　　　　　　　　　　 C. pillow　　　　　　　 D. ground

40. A. disappointed　　　　　　　　　　　　　　　　　 B. angry

C. awful　　　　　　　　　　　　　　　　　　　　　　　　　　　　 D. sensitive

41. A. grew　　　　　　　　 B. lay　　　　　　　　　　　　　 C. stood　　　　　　　 D. existed

42. A. for　　　　　　　　　　　　　 B. in　　　　　　　　　　 C. from　　　　　　　　 D. by

43. A. decade　　　　　　　 B. year　　　　　　　　　　　　 C. season　　　　　　　　　　 D. lifetime

44. A. offered　　　　　　　　　　　　　　　　　　　　　　　　 B. supported

C. pretended　　　　　　　　　　　　　　　　　　　　　　　　　 D. agreed

45. A. Just as　　　　　　　　　　　　　　　　　　　　　　　　　 B. In case

C. Now that　　　　　　　　　　　　　　　　　　　　　　　　　　 D. Even though

46. A. price　　　　　　　　　 B. wealth　　　　　　　 C. value　　　　　　　　 D. treasure

47. A. skillfully　　　　　　 B. hopefully　　　　　 C. kindly　　　　　　　 D. slowly

48. A. cheer　　　　　　　　 B. make　　　　　　　　 C. light　　　　　　　　 D. get

49. A. smile　　　　　　　　 B. work　　　　　　　　 C. show　　　　　　　 D. say

50. A. prevented　　　　　　　　　　　　　　　　　　　　　　　 B. stopped

C. kept　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　 D. followed

51. A. destroyed　　　　　　　　　　　　　　　　　　　　　　　 B. mended

C. improved　　　　　　　　　　　　　　　　　　　　　　　　　　 D. broken

52. A. friendship　　　　　　　　　　　　　　　　　　　　　　 B. honesty

C. love　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　 D. happiness

53. A. finally　　　　　　　　　　　　　　　　　　　　　　　　　 B. quickly

C. confidently　　　　　　　　　　　　　　　　　　　　　　　　 D. immediately

54. A. anything　　　　　　　　　　　　　　　　　　　　　　　　 B. something

C. nothing　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　 D. everything

55. A. changes　　　　　　　　　　 B. appears　　　　　　　　　 C. lasts　　　　　　　　　　　　 D. keeps

Section B
Directions: Complete the following passage by using the words in the box. Each word can only be used once. Note that there is one word more than you need
A. agree          B. suffer        C. system       D. notice        AB. through
AC. dangerous     AD. space       BC. limited     BD. absorbs      CD. let out
For years scientist have been worried about the effects of air pollution on the earth’s natural conditions. Some believe the air inside many houses may be more    41    than the air outside. It may be one hundred times worse.
Indoor air pollution can cause a person to feel tired, to    42     eye-pain, headache and other problems. Some pollutants can cause breathing disorders, diseases of blood and even cancer. Most scientists    43    that every modern house has some kind of indoor pollution. People began to    44    the problem in the early 1970s, when it was that builders began making houses and offices which did not waste energy. To do this they built buildings that    45    the flow of air between inside and outside. They also began using man-made building materials. These materials are now known to    46    harmful gases. As the problem became more serious, scientists began searching for a way to deal with it. They discovered a natural pollution control    47    for building green plants. Scientist do not really know how plants control air pollution. They believe that a plant’s leaves take in the pollutants. In exchange the plant produces oxygen    48    its leaves and through its tiny organizations on its roots. Scientists suggest that all buildings should have one large plant or several small plants inside for every nine square meters of space. Studies of different plants show that each    49    different chemicals. So the most effective way to clean the air is to use different kinds of plants. Having green plants inside your house can make it a prettier and healthier place.

.Its tiny eyes_____the cabbage,_____the creature’s interest in the vegetable.

A.are fixed on,show B.are fixed upon,showing

C.fix on,showing D.fix upon,showing

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