题目内容：

    Rachel Carson was an American author and environmental protection scientist. “Silent Spring” was her most famous book. The idea for the book developed from a suggestion from a friend. Rachel’s friend owned a protected area for birds. An airplane had flown over the area where the birds were kept and spread a powerful chemical called DDT. Many songbirds and harmless insects were killed by the DDT.

Miss Carson and other scientists were very concerned about the harmful effects of DDT and other insect-killing chemicals called pesticides. Rachel Carson tried to get many magazines interested in publishing a report about the subject. However, none would agree to publish anything about such a debate subject. They said no one wanted to hear that industrial companies could cause great ecological damage.

Miss Carson believed the public needed to know about this important issue. She decided to write a book about it. In her book “Silent Spring”, Miss Carson questioned the right of industrial companies to pollute without considering the effects on the environment. Miss Carson argued that this kind of pollution would result in ever-decreasing populations of birds and other wildlife. She said this would lead to the loss of the wonderful sounds of nature. The chemical poisoning of the environment, she said, would cause a silent spring.

The chemical industry felt threatened. Industry spokesmen and other critics said the book was non-scientific and emotional. They misunderstood the message of the book. Miss Carson did not suggest that all pesticides be banned. She urged that control of these substances be given to biologists who could make informed decisions about the risks involved.

Support for the book increased. By the end of 1962, there were more than forty bills in state laws proposing to control pesticides. Finally, in November, 1969, the United States government ruled that the use of DDT must stop in two years.

Rachel Carson did not live to see how her book influenced the government’s decision to ban DDT. She died of breast cancer in 1964.

1.What gets Rachel Carson to write the book?

A.The area of protection.

B.A powerful chemical called DDT.

C.Killed songbirds and insects.

D.The advice given by Rachel’s friend.

2.No magazines agreed to publish the harmful effect of DDT because ______.

A.it was an unimportant subject for them

B.they were afraid of being involved in the quarrel

C.they had no environmental consciousness at all

D.DDT was necessary for industry development

3.Industry spokesman’s attitude towards the book is that of ______.

A.tolerance B.criticism

C.unconcern D.praise

4.What does the passage mainly tell about?

A.The influence of the book “Silent Spring”.

B.Rachel Carson’s book“Silent Spring”.

C.Environmental protection.

D.Why DDT is forbidden.

5.What does the topic of the book “Silent Spring” imply?

A.DDT was forbidden to be used in spring.

B.Wildlife would disappear by and by.

C.Miss Carson enjoyed silence in spring.

D.If only it could be silent in spring.