Question

阅读理解

阅读下面短文，从每题所给四个选项中选出最佳答案。

The Green Revolution

　　From 1950 to 1980, the so－called “Green Revolution” swept the world．World food production doubled with the introduction of a new method of agriculture. It brought about new types of grain like wheat and corn, and the wide use of chemical fertilizers and farm machinery. These factors were the cause of the early, great success of this “revolution”. However, the Green Revolution methods no longer appear to be so successful. Though the population continues to grow, food production has failed to keep up with it.

　　There are a number of reasons for this. One reason lies in the cost of the new farming methods. The new kinds of seed produce much more than traditional (传统的) seed, but only under certain conditions. In order to produce as much as possible, farmers must use large amounts of expensive chemical fertilizers. They also need to use expensive insecticides (杀虫剂) since the new grains are more easily damaged by insects. Expensive watering systems are also necessary for these grains, especially in drier areas. Many farmers cannot afford to buy all the chemicals and equipments.

　　Another reason for lower production is that farmers must use more and more chemicals to keep producing the same amount of food. Many farmers cannot afford to buy more, and so production drops. These chemicals have other effects(影响)that are expensive in the long run. They flow into the ground water, causing pollution and health problems. As people learn about these problems, they try to limit the use of chemicals.

　　Finally, the Green Revolution has brought about social problems that have effects on food production. The difficulty lies in the cost of the new agricultural methods. Only the larger landowners can afford the high costs. With the money they make, the large landowners then buy land from the smaller farmers. This way, the large landowners become ever richer and the number of landless poor people increases. Social problems naturally increase in this situation.

　　Clearly, it is time to question the methods of the Green Revolution. Governments and farmers need to look at the long－term effects. They need to find new methods that will better meet the needs of the world's hungry people and will also cause less harm.

1．Chemical fertilizers and insecticides ________.

[　　]

A．destroy watering systems

B．are both expensive and damaging

C．hardly have any effect on people

D．are not always necessary with the new types of grain

2．In some places, the new farming methods have ________.

[　　]

A．increased the differences between rich and poor

B．encouraged small farmers to produce more

C．increased the size of the middle class

D．made large landowners less rich

3．We can infer from this passage that traditional farming methods were ________.

[　　]

A．more expensive

B．the cause of many social problems

C．preferred by the large landowners

D．less damaging to people and the environment

4．The Green Revolution methods are ________.

[　　]

A．damaging only to farmers

B．often unproductive and destructive

C．the most productive that we know

D．the only way to solve the problem of world hunger

Answer 1

答案：B;A;D;B