题目
题型：不详难度：来源：
Part B: Reading Comprehension 20%
A
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 |
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
答案
65-68 CBAC
解析
核心考点
试题【Part B: Reading Comprehension 20%A Backpacks are convenient. They can hold your】；主要考察你对题材分类等知识点的理解。[详细]
举一反三
D
The eruption of a volcano in the Canary Islands could trigger a “mega-tsunami”（巨大海啸）that would hit Atlantic coastlines with waves as high as 330 feet, scientists said on Wednesday. They said an eruption of the Cumbre Vieja volcano on La Palma, part of the Spanish island chain off West Africa, was likely to cause a massive chunk（大块）of rock to break off, crashing into the sea and kicking up huge walls of water higher than any other in recorded history. The tsunami would be capable of traveling huge distances at up to 500 miles an hour, the scientists said in a research paper to be published soon.
Simon Day, of the Benfield Greig Hazard Research Centre at the University College of London, said that as the volcano was not erupting at present, the short-term and medium-term risks were “negligible”. But Cumbre Vieja should be monitored closely for any signs of activity so that emergency services could plan an effective response, he said. “Eruptions of Cumbre Vieja occur at intervals of decades to a century or so and there may be a number of eruptions before its collapse（倒塌）,” said Day, who cooperated on the research with Steven Ward of the University of California. “Although the year-to-year probability of a collapse is therefore low, the resulting tsunami would be a major disaster with indirect effects around the world.”
The effects would spread north, west and south of the Canaries, with the west Sahara bearing the worst of the wave’s energy. The energy released by the collapse would be equal to the electricity consumption of the entire United States in half a year.
Immediately after the landslide（山崩）,a huge wave of water 93,000 feet high and tens of miles wide would form. As the landslide rocks moved deeper under water, a tsunami would develop. Within 10 minutes, the tsunami would have moved a distance of almost 155 miles. On the west Saharan shore, waves would probably reach heights of 330 feet.
Florida and the Caribbean, the final north Atlantic destinations to be affected by the tsunami, would have to brace themselves for 165-foot waves some eight to nine hours after the landslide. Wave heights toward Europe would be smaller, but substantial waves would hit the coasts of Britain, Spain Portugal and France. The research paper estimated water would penetrate several miles inland and that the devastation would cause trillions of dollars in damage.
76. What would be the result of a big chunk rock falling into the sea?
A. Waves would be very high. B. The volcano would stop.
C. Walls of water would kick up a storm. D. An earthquake would take place.
77. The word “negligible”(Line 3, Paragraph 2) is closest in meaning to ______.
A. unimportant B. small C. predictable D. avoidable
78. From the passage we may learn that the volcano erupts ______.
A. every year B. every 5 to 9 years
C. every 10 to 100 years D. every 5 to 10 months
79. All of the following are true EXCEPT ______.
A future eruption of Cumbre Vieja volcano may experience a massive collapse
Waves generated by the landslide could even reach the coasts of the United States
The landslide-released energy is equal to half a year’s electricity consumption in the US
American scientists have managed to utilize the volcanic energy for civil purposes
It is always more important to know how to study by oneself . It is quite easy to learn something in a language or a formula in maths , but it is difficult to use a formula in finding the answer to a maths problem . Great inventors do not get everything from school but they can invent many things and change the world a lot . Though Thomas Edison invented many things he didn’t have much school education . How do they do all these ? Because they know how to study . A lot of things are not taught in the classroom . They get knowledge from books outside school . They work hard all their lives , and the most important thing is that they know how to use their head .
31. What do many people go to school for ?
A. To make friends B. To get everything
C. To get a good education D. To study by themselves
32. What should a student learn to do from school ?
A. Try to remember more knowledge and formulas .
B. Try to learn how to read and how to think .
C. Try to remember what the teachers teach .
D. Try to invent the world .
33. How can an inventor invent things ? The most important thing is how
to .
A. be a great inventor B. study by himself
C. use his head well D. remember what he’s been taught
34. The word formula in this passage means .
A. 数学题 B. 公式 C. 几何图形 D. 数学用表
35. Which of the following shows the most important idea of this passage ?
A. School education is important for a person .
B. A student can not learn everything from school .
C. A student should learn how to remember a formula .
D. Inventors can invent things and change the world a lot .
阅读下面短文，从短文后所给各题的A、B、C、D四个选项中选出能填入相应空白处的最佳选项。
The study of the effects of music on the mind and brain has been a subject of interest for many. The 16 has concluded that music does have positive effects on the mind and brain. Music is found to affect the 17 of learning and thinking. If work is 18 by quiet and comforting music, it helps the listener think, analyze and work faster in a more 19 manner. Music 20 a positive attitude in the listeners and provides them with motivation(动力;动机). Surveys have shown that music brings about remarkable improvements in the 21 skills of students. Listening to pleasant music, while doing a difficult task, can make 22 seem easier.
Music has a 23 effect on the interpersonal skills of an individual. 24 that we face in life are often the result of lack of confidence and lack of desire to learn. Students’ poor academic results are often a(n) 25 of their lack of motivation and their disinterest. Music lessons during school can help the students 26 their mental block. Music proves helpful in encouraging young children to venture new fields.
Music 27 plays a vital role in strengthening 28 . Certain tunes are known to activate all the parts of the listener’s body, thus 29 him/her in the performance of other creative tasks. Music is found to give students the capacity to trust 30 . Music stimulates the brain centers that deal with thinking, analyzing and planning, thus strengthening one’s organizational skills.
16. A. newspaper B. book C. research D. time
17. A. joy B. process C. beginning D. task
18. A. accompanied B. created C. done D. composed
19. A. inefficient(低效的) B. efficient C. interesting D. boring
20. A. reduces B. combines C. takes D. develops
21. A. academic B. physical C. original D. historic
22. A. music B. learning C. lessons D. it
23. A. positive B. negative C. passive D. harmful
24. A. Diseases B. Successes C. Failures D. Difficulties
25. A. income B. outcome C. improvement D. progress
26. A. live B. love C. hate D. fight
27. A. never B. still C. ever D. also
28. A. responsibility B. creativity C. duty D. intelligence
29. A. benefiting B. constructing C. damaging D. worrying
30. A. othersB. teachers C. themselves D. texts
“The effect of low levels of particulate pollution found in many urban areas is not unlike secondhand smoke,” experts say. Studies show that short-term effects from particulates include diminished（减少） lung function, coughing, wheezing, and heart attacks. Long-term exposure can also slow normal lung growth, damage lung airways, and increase the risk of dying from lung cancer.
Certain populations, such as the very old and the very young, are the most vulnerable to air pollution. However, even the most alarming studies conducted in the most polluted areas suggest that the average person"s individual risk from exposure (暴露) is very slight. Relative risk numbers often seem more frightening than they actually are. For example, an earlier study published in the New England Journal of Medicine found that short-term exposure to traffic fumes tripled ( 成为3倍) the risk of heart attacks in heart-attack survivors.
Short of moving to the countryside or at least away from busy roads, shielding yourself from the effects of air pollution is not easy. Masks won"t work. “At the very least,” suggests Murray Mittleman, a cardiologist at Harvard University, “people who regularly exercise outdoors near highways may want to consider remapping their route.”
66. What does the underlined sentence in the first paragraph mean?
A. Rocket scientists are making researches on people’s health.
B. It"s obvious that air pollution has a bad effect on people’s health.
C. People aren"t sure whether taking deep breaths on a smoggy day is bad.
D. People often have a hard time when taking deep breaths on a smoggy day.
67. The word "vulnerable" in Paragraph 3 probably means _________.
A. easy to be hurt B. easy to be protected
C. easy to be used D. easy to be saved
68. The main idea of Paragraph 3 is _________.
A. that even small risk from particulate causes big problems
B. that air pollution often leads to heart attack
C. who are most likely to get affected
D. that we shouldn"t worry about the average low risk
69. In order to be healthier, you"d better _________.
A. take deep breaths B. wear a mask
C. live in a countryside D. clean the busy road
70. The passage is written in a(n) _________ tone.
A. subjective B. humorous C. doubtful D. objective
Most people in school like Gloria. So when she 36 sick, some boys 37 to visit her. But none of them wanted to 38 any money on a gift to bring along. Then Willie said, "We can 39 some flowers from a 40. Gloria will not know 41 they come from, and the dead man will not 42 them. "
Everybody was afraid 43 Willie. So he went alone and found some beautiful flowers. Then they went to Gloria"s 44 , and the boys acted 45 the flowers were from all of them, but 46 did not mind. After their visit, Willie 47 the other boys, "It"s a good thing that I was not afraid. Gloria liked the flowers. "
The other boys laughed. Gloria 48 not have liked the 49 if she had known they had 50 from a grave (坟墓).
That night, Willie was reading a book 51 his mother came into his room. "There"s a man 52 asking for you," she asked. "He said that you didn"t 53 the flowers. "
"What does he look like?" Willie asked.
"That"s hard to say," Willie"s mother answered. "He is all 54 with mud. "（泥巴）
Willie, all of a sudden, turned 55 .
36. A. got B. fall C. made D. took
37. A. thought B. asked C. planned D. suggested
38. A. keep B. cost C. take D. spend
39. A. steal B. rob C. buy D. beg
40. A. shop B. store C. street D. grave
41. A. how B. where C. when D. why
42. A. miss B. lose C. hate D. love
43. A. beside B. besides C. including D. except
44.A. room B. house C. school D. library
45. A. as if B .if C. that D. as
46. A. Gloria B. some C. Willie D. nobody
47. A. told B. asked C. said to D. explained
48. A. must B. can C. could D. would
49. A. boys B. flowers C. secret D. news
50. A. stolen B. robbed C. taken D. come
51. A. as B. when C. while D. suddenly
52. A. inside B. outside C. still D. also
53. A. ask for B. pay C. pay off D. pay for
54. A, painted B. dressed C. wrapped D. covered
55. A. sad B. red C. pale D. glad
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