DOC《模拟题精练》

s job to find out how he can get control of the plane again. Questions: 1. Before a new airliner goes into service, there are two important tests which can be described as and respectively. 2. The purpose of the tank test is to find out if there are any weak parts that 3. The plane lowered into a huge tank of water for the first important test because there would be less damage when 4. When is the second important test made? 5. In what sense is the second test most dangerous? Passage

3 A growing world'

s population and the discoveries of science may alter this pattern of distribution in the future. As men slowly learn to master disease, control floods, prevent famines, and stop wars, fewer people die every year;

and in consequence the population of the world is steadily increasing. When numbers rise, the extra mouths must be fed. New lands must be brought under cultivation, or land already farmed made to yield larger crops. In some areas the accessible land is largely so intensively cultivated that it will be difficult to make it provide more food. In some areas the population is so dense that the land is parceled out in units too tiny to allow for much improvement in farming methods. Were a large part of this farming population drawn off into industrial occupations, the land might be farmed much more productively by modern methods. There is now a race for science, technology, and industry to keep the output of food rising faster than the number of people to be fed. New strains of crops are being developed which will thrive in unfavorable climates: there are now farms beyond the Arctic Circle in Siberia and North America;

irrigation and dry-farming methods bring arid lands under the plough, dams hold back the waters of great rivers to ensure water for the fields in all seasons and to provide electric power for new industries;

industrial chemicals to destroy locusts and many plant diseases. Every year some new means are devised to increase or to protect the food of the world. Questions: 1. Why is the world'

s population growing? 2. On what condition might the land be more productively farmed? 3. How has it been made possible that there are now farms beyond the Arctic Circle? 4. What does the word strains (Line 3, Para. 3) mean? 5. What does the passage focus on? Answer Key to Exercises Passage

1 1. There was no fridge in the author'

s home in 1950s. Because people had effective ways to preserve their food. Consumers. Hum away continuously. Critical. Passage

2 1. strange, dangerous. 2. would burst under pressure. 3. the plane explodes under water. 4. During test flights in the air. 5. The test pilot may lose his life. Passage

3 1. Because people are living longer. 2. If the units of land were made much larger. 3. By producing new strains of crops. 4. Types. 5. Food production. 声明:本资料由文都教育授权 考试吧(Exam8.com)发布,转载请注明出自 ht........