题目内容
15. In an emergency, you should remain _____.
A.calm B. silent C. quiet D. Tranquil
A
Part B: Reading Comprehension 20%
Backpacks are convenient. They can hold your books, your lunch, and a change of clothes, leaving your hands free to do other things. Someday, if you don’t mind carrying a heavy load, your backpack might also power your MP3 player, keep your cell phone running, and maybe even light your way home.
Scientists from the University of Pennsylvania in Philadelphia and the Marine Biological Laboratory in Woods Hole, Mass., have invented a backpack that makes electricity from energy produced while its wearer walks.
The backpack’s electricity-creating powers depend on springs used to hang a cloth pack from its metal frame. The frame sits against the wearer’s back, and the whole pack moves up and down as the person walks. A mechanism with gears(传动装置) collects energy from this motion and transfers it to an electrical generator.
Surprisingly, the researchers found, people walk differently when they wear the springy packs. As a result, wearers use less energy than when carrying regular backpacks. Also, the way the new packs ride on wearers’ backs makes them more comfortable than standard packs.
The backpack could be especially useful for soldiers, scientists, mountaineers, and emergency workers who typically carry heavy backpacks. These people often rely on global positioning system(GPS) receivers, night-vision goggles(夜视镜), and other battery-powered devices to get around and do their work. Because the pack can make its own electricity, users don’t need to give up space in their packs to lots of extra batteries.
For the rest of us, power-generating backpacks could make it possible to walk, play video games, watch TV, and listen to music, all at the same time. Electricity-generating packs aren’t on the market yet, but if you do get one eventually, just make sure to look both ways before crossing the street!
65. The passage introduces a new kind of ______ backpack.
A. electronic B. electricity-producing
C. electron-generating D. electricity-controlling
66. The new backpack makes use of ______ to produce power.
batteries placed at the bottom of the frame
the motion of the pack while the wearer walks
energy the wearer consumes for carrying the pack
the collective motion of a mechanism and some gears
67. From the passage, we can infer that ______.
the backpacks of mountaineers may become smaller in the future
the new backpack can hardly be produced due to its potential danger
the new backpack will someday replace MP3 players and cell phones
the backpack will also provide electricity for lighting our houses
68. An enormous disadvantage of power-generating backpacks might be that ______.
they may stop working at any time
it takes quite a while to have the energy transferred
they may distract the wearer’s attention from road safety
they will be extremely heavy with the mechanism
22. Is the occasion near ______ we can practice our talents?
A. when B. which C. that D. What
22. The chairman will be pleased at ________ scene that everything is in ________ place.
A. a; a B. the; the C. the; 不填 D. 不填; the
第三部分：阅读理解（共20小题，每题2分，满分40分）
阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。
The luxury of eating an apple on Mars could cost as much as US $22,000. That's because it costs about US $120,000 to launch a kilogram of anything into deep space. So getting enough food into orbit is a big problem facing astronauts on a trip to Mars.
After NASA (National Aeronautics and Space Administration) has no current plans to send astronauts to Mars, related research is being carried out—including the production of food. Astronauts on the international Space Station usually eat primarily freeze-dried food to which they add water. However, the weight of the packaging—almost as much as the food inside—costs a lot of money. The biggest problem of all is a psychological one.
Scientists believe that astronauts will suffer without the variety offered by fresh vegetables. The answer is to grow at least some of the food. On a short trip it is imagined that astronauts will eat vegetables such as lettuce, spinach and carrots grown in a refrigerator-sized unit known as a "salad machine". On longer journeys they will actually grow vegetables in greenhouses on Mars. Martian astronauts will eat a vegetarian diet since it will not be practical to raise animals. To make up for the lack of meat, recipes have been created to add as much variety to the diet as possible, using only a basic number of products. It uses heat and mechanical force to transform soybeans into meat and cheese substitutes（代替品）. The prized result of this research is a purely vegetable-based pizza with meat and cheese substitutes .
41. What is the best title for this story?
A. Space Food B. Astronauts' Problem
C. The Packaging of Space Food D. Mars Rover-Spirit
42. What is the main problem with the diet of astronauts on the international Space Station now?
A. The packaging is too expensive.
B. Only fresh vegetables are offered.
C. Too much water is needed for dried food.
D. There are not enough choices of food.
43. What is the "salad machine" in the spaceship for?
A. It stores vegetables. B. It grows vegetables.
C. It cooks green salad. D. It mixes green salad.
44. From the passage we know that the diet plan for Martian astronauts is short of .
A. Vegetables. B. A special kind of Pizza. C. Meat. D. Soybeans
115. The conductor felt terrible on the way to Wuhan. The underlined word means ____.
A. very well B. very good C. very bad D. very lucky
30. He is badly down these days. This sentence probably means _____.
A. He is seriously ill these days. B. He is in low spirit these days.
C. He fell down and was seriously hurt. D. He didn’t study hard these days.
15. With the development of West China, many technicians are _____ needed there in recent years.
A. many B. bad C. badly D. Well
4. When Mary finally got there, Tom had left an hour _____.
A. before B. ago C. later D. After
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