Question

【题目】 The monarch is one of the most beautiful butterflies. It is famous for its yearly migration（迁徙）from the northern part of North America to Mexico, There, millions of monarchs spend the winter together in one small area. This migration is one of the greatest wonders of nature. Yet this behavior has now put the monarch at risk.

Every September, millions of monarchs from the United States fly to Mexico. After about two months of flying time, they reach their sanctuary(庇护所)in central Mexico. Then, in the warm climate of private and quiet valleys, far from most human activity, the butterflies create one of nature’s great scenes. They cover every tree with bright color. The show lasts until spring, when the butterflies return north.

While they are all crowded together, the monarchs are highly weak. If the environment in those valleys was disturbed, the whole species could be hurt or even die out. That is why for many years scientists who knew about the monarchs’ winter sanctuary kept the location a secret.

In recent years, however, the monarchs’ secret has been discovered. Today, the butterflies’ winter sanctuary is crowded with tourists, who disturb the environment. Worse still, local farmers who need more land to farm have begun to take up the area. They are cutting down trees, making it difficult for the butterflies to survive. They should not farm in the monarchs’ sanctuary.

People should act immediately to protect the species’ winter sanctuary. Local farmers must be helped so that they no longer need to take land from the butterflies. Tourist visits to the butterflies’ hidden valleys must also be limited. Unless these steps are taken soon, in a few years the monarch butterfly of North America may be just a beautiful memory.

【1】What do we know about monarch butterflies?

A. They fly to the US in autumn.B. They spend the winter together.

C. They are the most beautiful butterflies.D. They have been known to human beings until recent years.

【2】What is Paragraph 2 mainly about?

A. The monarchs’ diet.B. The monarchs’ colors.

C. The monarchs’ life cycle.D. The monarchs’ migration.

【3】Why did scientists keep the monarchs’ winter sanctuary a secret?

A. To keep the valleys from being destroyed.

B. To stop farmers from cutting down trees.

C. To do their research secretly

D. To protect the monarchs.

【4】What is the purpose of the text?

A. To tell about a great place to watch monarch butterflies.

B. To provide information about monarch butterflies.

C. To ask people to protect monarch butterflies.

D. To call on people to save the environment.

Answer 1

【答案】

【1】B

【2】D

【3】D

【4】C

【解析】

短文大意：本文是科普文，介绍了帝王蝶每年一次的大迁徙奇观和愈加危险的生存环境，呼吁人们立即行动起来采取措施保护帝王蝶。

【1】题意：我们了解帝王蝶什么?考查细节判断。A. 他们秋天飞往美国；根据Every September, millions of monarchs from the United States fly to Mexico.可知说法错误。B. 他们一起过冬天；根据There, millions of monarchs spend the winter together in one small area.可知说法正确。C.他们是最美丽的蝴蝶；根据The monarch is one of the most beautiful butterflies.可知说法错误。D. 直到最近几年，它们才为人类所知；根据In recent years, however, the monarchs’ secret has been discovered.可知说法错误。综合以上分析，故选B。

【2】题意：第二段主要讲了什么?考查段意理解。根据段首Every September, millions of monarchs from the United States fly to Mexico.和段尾The show lasts until spring, when the butterflies return north.可知，第二段主要讲帝王蝶的迁徙奇观，故选D。

【3】题意：为什么科学家要对帝王蝶的冬季庇护所保密?考查细节判断。根据If the environment in those valleys was disturbed, the whole species could be hurt or even die out. That is why for many years scientists who knew about the monarchs’ winter sanctuary kept the location a secret.可知是为了保护帝王蝶，故选D。

【4】题意：文章的目的是什么?考查文意理解。根据People should act immediately to protect the species’ winter sanctuary.和Unless these steps are taken soon, in a few years the monarch butterfly of North America may be just a beautiful memory.可知作者呼吁人们立即行动起来采取措施保护帝王蝶，To ask people to protect monarch butterflies.符合文意，故选C。