(江苏省启东中学2007高考最后冲刺练习A篇)
A Battery’s Worst Nightmare (噩梦)
Portable electronics that can be carried about easily are only as good as their batteries 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 laptop or 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 (氢) . Its tiny parts are etched onto silicon wafers (硅片) in the same manner that computer parts are imprinted 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（效率）. Tiny engine parts don’t always behave like their scaled-up parts of the first engine. Something between the parts can slow down the works, according to Columbia University professor Luc Frechette, 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 at 10 percent efficiency —that is, 10 times better than batteries operate. Frechette says that a complete system, with all parts of place and working, will be set up in the next couple of years, but commercial models aren’t like until at least the end of the next ten years.
1. 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 caused by batteries must be solved
2. What’s the meaning of the underlined word “devil” in paragraph 3?
A. problem B. advantage C. invention Ｄ. technique
3. What can we infer from the passage?
A. The new invention doesn’t need any fuel.
B. The new engine has been produced in quantity.
C. The new invention is much cheaper than the battery.
D. The new engine needs to be improved before it’s on sale
4. What is the main purpose of this passage?
A. To introduce a new invention to readers.
B. To persuade readers not to use batteries.
C. To show us how the new invention works.
D. To declare when the engine will be on sale.
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金状元绩优好卷系列答案科目：高中英语 来源： 题型：阅读理解
(江苏省启东中学2009届高三最后一卷C篇)
Name: Off the Beaten Path
Cover price: $30.00
Our price: $l9.80
The best-selling Reader’s Digest travel book has 40% new content including over 200 new sites, over 200 new full-color photographs, and all-new, up-to-date maps. It spotlights over l, 000 of the United States’ most overlooked must-see destinations.
Name: Container Gardens by Number
Cover price: $l5.95
Our price: $9.49
A unique book contains 50 easy-to-follow container designs. Each design provides a simple numbered planting plan that shows exactly how to create each display, with an instruction of the finished planter and in-depth plant information. The plans are easy to follow and for any type of living space or garden.
Name: Best Weekend Projects
Cover price: $l7.95
Our price: $l3.96
Choose from 80 unique ideas to create an extraordinary living space. The projects are practical, as well as attractive, and will improve your home and yard and can be made in a weekend. These 80 well-designed projects are presented in a clear, easy-to-follow style that addresses readers in an accessible, user-friendly tone.
Name: l80l Home Remedies
Cover price: $40.00
Our price: $29.96
Plenty of health complaints can be handled at home. Each and every remedy will be tested by a doctor to make sure it is safe and sound.
Dozens of conditions are covered, from headaches, sunburn, bad breath, and blisters to allergies, and hiccups.
62. You can most probably read the passage in a ___________.
A. newspaper B. travel guide C. reference book D. textbook
63. How much money could you save if you want to buy a travel book?
A. $6.46 B. $l0. 20 C.$l3.96 D. $l9.8
64. Which of the following could help you to deal with common diseases without a doctor?
A. Off the Beaten Path. B. Container Gardens by Number.
C. l80l Home Remedies. D. Best Weekend Projects.
65. What’s the purpose of the passage?
A. To share his opinion about the books with readers.
B. To advise readers to read more in spare time.
C. To share the pleasure of reading with readers.
D. To advise readers to buy their books.
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科目：高中英语 来源： 题型：阅读理解
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For years experts have argued that poor households are consuming less nourishing food than the rest of the population. But a survey of some of the lowest earners in Britain shows the nutritional value of what they eat is little different to everyone else. In fact, the same deficiencies in diet were shared by all the population and the findings suggest that poor eating choices are far more widespread than previously suspected - affecting many wealthier families. These included low fruit and vegetable consumption, not eating enough oily fish and eating too much saturated fat and sugar. “This is a large and significant study and it shows we are all eating just as bad a diet as each other,” said Tim Lang, professor of food policy at City University. The poorest families were eating only slightly more sugar and slightly less fruit and vegetables, according to the study of 3,728 respondents in the bottom of the population. Alison Tedstone, head of nutritional science at the Food Standard Agency, said: “ Overall, people on low incomes have less than ideal diets, but their diets are only slightly worse than those of the rest of the population.” The study also showed that low earners are choosing to eat unhealthily. Their food choices were not linked to their income, their access to shops or their cooking skills. The findings appear to contradict assumptions that the poor cannot afford healthier foods or are too far away from shops that sell them. The Low Income Nutrition and Diet Survey showed that like the rest of the population, the poor's daily fruit and vegetable intake on average is below the recommended five portions. Fewer than 10 per cent of respondents hit this target, while around 20 per cent ate less than a portion per day. More than three quarters (76 per cent) of men and 81 per cent of women did less than one 30-minute session of moderate or vigorous exercise per week Some 45 per cent of men and 40 per cent of women were smokers. This compares with 28 per cent of men and 24 per cent of women in the general population. 56. According to the passage, which of the following is true? A. Whether the poor or the rich maybe have a bad diet. B. Even the poor can enjoy enough fruit and fish consumption. C. Only the poor have a bad diet. D. The study was conveyed in both the rich and the poor. 57. What kind of persons maybe eat most sugar? A. The rich. B. Men. C. The poorest. D. Women 58. From the passage, we can learn __________. A. the poor choose unhealthy food because of low income B. having no access to shops also leads to the poor’s bad diet C. the poor’s daily fruit intake is as much as general people D. the number of smokers in the poor is bigger than that in general people 59. What’s the best title of the passage?[ A. The poor’s healthy problem. B. Keep off junk food. C. How to have a good diet. D. A diet survey. 查看答案和解析>> 同步练习册答案 湖北省互联网违法和不良信息举报平台 | 网上有害信息举报专区 | 电信诈骗举报专区 | 涉历史虚无主义有害信息举报专区 | 涉企侵权举报专区 违法和不良信息举报电话：027-86699610 举报邮箱：58377363@163.com版权声明：本站所有文章，图片来源于网络，著作权及版权归原作者所有，转载无意侵犯版权，如有侵权，请作者速来函告知，我们将尽快处理，联系qq：3310059649。 ICP备案序号: 沪ICP备07509807号-10 鄂公网安备42018502000812号 |
