题目内容
Britain, ______________many other industrialized countries, ______ experienced major changes over the past 100 years.
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A.together with; have |
B.as well as; have |
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C.in common with; has |
D.instead of ; has |
C
【解析】考察主谓一致和介词短语。第一空表示:和;故排除D项。谓语动词与Britain保持一致,使用单数形式。故C正确。
For years, the automobile industry has been testing vehicles that use hydrogen as fuel. Now, people across the United States have had a chance to see and even drive cars that get power from hydrogen fuel cells (燃料电池).
But the hydrogen fuel cell is not a new idea. The fuel cell was first invented by Sir William Grove of Britain in 1839. Since then, many different designs, have been invented. There is one place where fuel cells are a proven technology: in space. The American space agency used fuel cells in its Apollo spaceships in the twentieth century.
The most useful fuel cell for transportation purposes is the Polymer Electrolyte Membrane, or P.E.M. fuel cell. It is simple and can operate at temperatures of sixty to eighty degrees Celsius. That is much lower than other fuel cell designs. A P.E.M. fuel cell has two sides divided by a thin membrane (膜). Hydrogen gas is forced through one side where it comes in contact with a reactive material containing the metal platinum(铂). The membrane separates the electrons(电子) from the protons(质子) in the hydrogen atoms. The protons pass through it to the other side of the fuel cell. But the electrons are captured to do work; like powering a motor. Oxygen from the air is forced into the other side of the fuel cell. There, the gas meets the protons that have passed through the membrane. They combine to form water and heat. A single fuel cell does not produce a lot of electricity. But when many fuel cells are combined, they can produce enough electricity to power a vehicle. The product of the chemical reaction that powers fuel cells is water. This makes fuel cells a very clean technology.
Hydrogen fuel cell cars have been slow to develop because of many technical problems that have to be solved. For example, it is unclear how long the membranes in P.E.M. fuel cells will last. Also, fuel cells need water for their chemical reactions. They must be designed to start easily at low temperatures and in dry climates. And smaller, less costly fuel cells must be designed before they can truly take the place of gasoline engines. Now more models of fuel cell vehicles are being tested than ever before. The threat of climate change and the high cost of oil have increased interest in these vehicles that do not cause pollution.
| Title | More Models of Hydrogen Cars Being Tested |
| The progress of hydrogen fuel cell | ·(1) ________ by Sir William Grove in 1839. ·Designed (2) ________ ever since. ·Used in Apollo spaceships in the twentieth century. |
| Operating principle of P.E.M. | ·It has two sides divided by a thin membrane. ·Hydrogen gas from one side (3) ________ the active metal platinum. ·The electrons are (4) ________ from the protons in the hydrogen atoms. ·The protons pass through the fuel cell to the other side. ·Oxygen from the air is (5) ________ into the other side of the fuel cell. ·The gas meets the protons,and then water and heat are(6) ________ |
| Reasons for slow (7) ________of hydrogen fuel cell cars | ·There are many technical problems (8) ________ ·The durability of the membranes in P.E.M. fuel cells is not clear. ·They have to start easily at (9)________ temperatures and in dry climates. ·They must be smaller and less costly before (10) ________ gasoline engines. |
第二节 信息匹配(共5小题,每小题2分,满分10分)
请阅读下列应用文及相关信息,并按照要求匹配信息。请在答题卡上将对应题号的相应选项字母涂黑
The following people are expressing their thoughts (56--60) to show their concern for food, environment and so on.After that are pieces of related information (A--F) .Now decide which piece of information would be most suitable for the thought and idea mentioned in questions61---5 and mark your answer letter (A---F) on your answer sheet.There is one extra paragraph which you do not need to use.
56.How I was struck by the clear water and fresh air in my childhood! But everything has changed, that is, the clear water and fresh air are nowhere to be found again as they were. Above all, a great deal of waste hardly rots away.
57.More and more people are beginning to have a good knowledge of the importance of a safer and cleaner environment, which in turn forces the business to be cleaned up.
58.Organic products are getting more and more popular among people, but we should know the fact that organic products might also have something to do with pesticides.
59.I’m very much fond of growing some vegetables of my own in my small garden, for many vegetables on sale in markets are actually becoming more and more dangerous as a result of widespread pesticides.
60.Nowadays it is very convenient for consumers to find and buy green food in supermarkets as they are clearly marked.
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A."Organic produce is always better, "Gold said."The food is free of pesticides(农药) ,and you are generally supporting family farms instead of large farms.And more often than not it is locally grown and seasonal, so it is more tasty." Gold is one of a growing number of shoppers buying into the organic trend, and supermarkets across Britain are counting on more like him as they grow their organic food business. |
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B.Market research shows that Gold and others who buy organic food can generally give clear reasons for their preferences - but their knowledge of organic food is far from complete.For example, small amounts of pesticides can be used on organic products.And about three quarters of organic food in Britain is not local but imported to meet growing demand."The demand for organic food is increasing by about one third every year, so it is a very fast-growing market, "said Sue Flock, a specialist in this line of business. |
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C.Many cities around the world today are heavily polluted.Careless methods of production and lack of consumer demand for environment-friendly products have contributed to the pollution problem.One result is that millions of tons of glass, paper, plastic, and metal containers are produced, and these are difficult to get rid of. |
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D.However, today, more and more consumers are choosing "green" and demanding that the products they buy should be safe for the environment.Before they buy a product, they ask questions like these: "Will this shampoo damage the environment?" "Can this metal container be reused or can it only be used once?" |
E.Only a few years ago, it was impossible to find green products in supermarkets, but now there are hundreds.Some supermarket products carry labels(标签) to show that the product is green.Some companies have made the manufacturing(制造) of clean and safe products their main selling point and emphasize it in their advertising.
F.The concern for a safer and cleaner environment is making companies rethink how they do business.No longer will the public accept the old attitude of "Buy it, use it, throw it away, and forget it." The public pressure is on, and gradually business is cleaning up its act.