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阅读理解
A new study warns that about thirty percent of the world's people may not have enough water by the year 2025.
A private American organization called Population Action International did the new study. It says more than three－hundred－thirty－five－million people lack enough water now. The people live in twenty－eight countries. Most of the countries are in Africa or the Middle East.
P－A－I researcher Robert Engelman says by the year 2025, about three－thousand－million people may lack water. At least 18 more countries are expected to have severe water problems. The demand for water keeps increasing. Yet the amount of water on Earth stays the same.
Mr. Engelman says the population in countries that lack water is growing faster than in other parts of the world. He says population growth in these countries will continue to increase.
The report says lack of water in the future may result in several problems. It may increase health problems. Lack of water often means drinking waters not safe. Mr. Engelman says there are problems all over the world because of diseases, such as cholera, which are carried in water. Lack of water may also result in more international conflict. Countries may have to compete for water in the future. Some countries now get sixty percent of their fresh water from other countries. This is true of Egypt, the Netherlands, Cambodia, Syria, Sudan, and Iraq. And the report says lack of water would affect the ability of developing to improve their economies. This is because new industries often need a large amount of water when they are beginning.
The Population Action International study gives several solutions to the water problem. One way, it says, is to find ways to use water for more than one purpose. Another way is to teach people to be careful not to waste water. A third way is to use less water of agriculture.
The report also says long－term solutions to the water problem must include controls on population growth. It says countries cannot provide clean water unless they slow population growth by limiting the number of children people have.
1．According to the author's opinion, the first serious problem caused by lack of water is ________.
[ ]
2．Robert Engelman may be ________.
[ ]
3．________ may have severe water problem among the following countries.
[ ]
4．Which of the following is not the way to solve the water problem?
[ ]
A．To control population growth.
B．To teach people not to waste water.
C．To find ways to use water for only one purpose.
D．To use less water of agriculture.
5．Which of the following is the main idea of the passage?
[ ]
A．How to get more water in the future.
B．Problems caused by water.
C．World water shortage.
D．A new study on water.
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Even plant can run a fever, especially when they’re under attack by insects or disease. But unlike human, plants can have their temperature taken from 3, 000 feet away straight up. A decade ago, adopting the infrared （红外线）scanning technology developed for military purposes and other satellites, physicist Stephen Paley came up with a quick way to take the temperature of crops to determine which ones are under stress. The goal was to let farmers precisely target pesticide （杀虫剂）spraying rather than rain poison on a whole field, which invariably includes plants that don’t have pest （害虫）problems.
Even better, Paley’s Remote Scanning Services Company could detect crop problems before they became visible to the eye. Mounted on a plane flown at 3, 000 feet at night, an infrared scanner measured the heat emitted by crops. The data were transformed into a color-coded map showing where plants were running“fevers”. Farmers could then spot-spray, using 50 to 70 percent less pesticide than they otherwise would.
The bad news is that Paley’s company closed down in 1984, after only three years. Farmers resisted the new technology and long - term backers were hard to find. But with the renewed concern about pesticides on produce, and refinements in infrared scanning, Paley hopes to get back into operation. Agriculture experts have no doubt the technology works. “This technique can be used on 75 percent of agricultural land in the United States, ” says George Oerther of Texas A & M. Ray Jackson , who recently retired from the Department of Agriculture, thinks remote infrared crop scanning could be adopted by the end of the decade. But only ff Paley finds the financial backing which he failed to obtain 10 years ago.
Plants will emit an increased amount of heat when they are______________.
A. sprayed with pesticides
B. facing an infrared scanner
C. in poor physical condition
D. exposed to excessive sun rays
In order to apply pesticide spraying precisely, we can use infrared scanning to____________.
A. estimate the damage to the crops
B. measure the size of the affected area
C. draw a color-coded map
D. locate the problem area
Farmers can save a considerable amount of pesticide by______________.
A. resorting to spot-spraying
B. consulting infrared scanning experts
C. transforming poisoned rain
D. detecting crop problems at an early stage
The application of infrared scanning technology to agriculture met with some difficulties
_______________.
A. the lack of official support
B. its high cost
C. the lack of financial support
D. its failure to help increase production
Infrared scanning technology may be brought back into operation because of_____________.
A. the desire of farmers to improve the quality of their produce
B. growing concern about the excessive use of pesticides on crops
C. the forceful promotion by the Department of Agriculture
D. full support from agricultural experts
查看习题详情和答案>>Ⅱ 阅读(共两节，满分50分)
第一节 阅读理解(共20小题；每小题2分，满分40分)
阅读下列短文，从每题所给的A、B、C和D项中，选出最佳选项，并在答题卡上将该项涂黑。
Even plant can run a fever, especially when they’re under attack by insects or disease. But unlike human, plants can have their temperature taken from 3, 000 feet away straight up. A decade ago, adopting the infrared （红外线）scanning technology developed for military purposes and other satellites, physicist Stephen Paley came up with a quick way to take the temperature of crops to determine which ones are under stress. The goal was to let farmers precisely target pesticide （杀虫剂）spraying rather than rain poison on a whole field, which invariably includes plants that don’t have pest （害虫）problems.
Even better, Paley’s Remote Scanning Services Company could detect crop problems before they became visible to the eye. Mounted on a plane flown at 3, 000 feet at night, an infrared scanner measured the heat emitted by crops. The data were transformed into a color-coded map showing where plants were running“fevers”. Farmers could then spot-spray, using 50 to 70 percent less pesticide than they otherwise would.
The bad news is that Paley’s company closed down in 1984, after only three years. Farmers resisted the new technology and long - term backers were hard to find. But with the renewed concern about pesticides on produce, and refinements in infrared scanning, Paley hopes to get back into operation. Agriculture experts have no doubt the technology works. “This technique can be used on 75 percent of agricultural land in the United States, ” says George Oerther of Texas A & M. Ray Jackson , who recently retired from the Department of Agriculture, thinks remote infrared crop scanning could be adopted by the end of the decade. But only ff Paley finds the financial backing which he failed to obtain 10 years ago.
26．Plants will emit an increased amount of heat when they are______________.
A. sprayed with pesticides
B. facing an infrared scanner
C. in poor physical condition
D. exposed to excessive sun rays
27．In order to apply pesticide spraying precisely, we can use infrared scanning to____________.
A. estimate the damage to the crops
B. measure the size of the affected area
C. draw a color-coded map
D. locate the problem area
28．Farmers can save a considerable amount of pesticide by______________.
A. resorting to spot-spraying
B. consulting infrared scanning experts
C. transforming poisoned rain
D. detecting crop problems at an early stage
29．The application of infrared scanning technology to agriculture met with some difficulties
_______________.
A. the lack of official support
B. its high cost
C. the lack of financial support
D. its failure to help increase production
30．Infrared scanning technology may be brought back into operation because of_____________.
A. the desire of farmers to improve the quality of their produce
B. growing concern about the excessive use of pesticides on crops
C. the forceful promotion by the Department of Agriculture
D. full support from agricultural experts
查看习题详情和答案>>Even plant can run a fever, especially when they’re under attack by insects or disease. But unlike human, plants can have their temperature taken from 3, 000 feet away straight up. A decade ago, adopting the infrared （红外线）scanning technology developed for military purposes and other satellites, physicist Stephen Paley came up with a quick way to take the temperature of crops to determine which ones are under stress. The goal was to let farmers precisely target pesticide （杀虫剂）spraying rather than rain poison on a whole field, which invariably includes plants that don’t have pest （害虫）problems.
Even better, Paley’s Remote Scanning Services Company could detect crop problems before they became visible to the eye. Mounted on a plane flown at 3, 000 feet at night, an infrared scanner measured the heat emitted by crops. The data were transformed into a color-coded map showing where plants were running“fevers”. Farmers could then spot-spray, using 50 to 70 percent less pesticide than they otherwise would.
The bad news is that Paley’s company closed down in 1984, after only three years. Farmers resisted the new technology and long - term backers were hard to find. But with the renewed concern about pesticides on produce, and refinements in infrared scanning, Paley hopes to get back into operation. Agriculture experts have no doubt the technology works. “This technique can be used on 75 percent of agricultural land in the United States, ” says George Oerther of Texas A & M. Ray Jackson , who recently retired from the Department of Agriculture, thinks remote infrared crop scanning could be adopted by the end of the decade. But only ff Paley finds the financial backing which he failed to obtain 10 years ago.
51．Plants will emit an increased amount of heat when they are______________.
A. sprayed with pesticides
B. facing an infrared scanner
C. in poor physical condition
D. exposed to excessive sun rays
52．In order to apply pesticide spraying precisely, we can use infrared scanning to____________.
A. estimate the damage to the crops
B. measure the size of the affected area
C. draw a color-coded map
D. locate the problem area
53．Farmers can save a considerable amount of pesticide by______________.
A. resorting to spot-spraying
B. consulting infrared scanning experts
C. transforming poisoned rain
D. detecting crop problems at an early stage
54．The application of infrared scanning technology to agriculture met with some difficulties
_______________.
A. the lack of official support
B. its high cost
C. the lack of financial support
D. its failure to help increase production
55．Infrared scanning technology may be brought back into operation because of_____________.
A. the desire of farmers to improve the quality of their produce
B. growing concern about the excessive use of pesticides on crops
C. the forceful promotion by the Department of Agriculture
D. full support from agricultural experts
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