Question

听下面一段独白，回答以下小题。

1.Where can one probably see a spider?

A.23,000 feet above sea level.

B.2,200 feet below the earth's surface.

C.On Mount Qomolangma.

2.What can we conclude from the talk?

A.Spiders deserve more respect of us.

B.Spiders are dying out of the earth.

C.People should raise spiders to destroy insects.

3.Why would human life be in danger if there's no spider?

A.Because spiders catch and eat insects.

B.Because spiders can protect our environment.

C.Because spiders can help reduce air pollution.

Answer

1.C

2.A

3.A

【解析】

【原文】

Most people hate spiders. But few consider that spiders are intelligent, inventive and good friends to people. Spiders have highly developed nervous systems. Their brains are capable of remembering, and they are remarkable engineers. They can be found living anywhere from 22,000 feet above sea level, on Mount Qomolangma, to 2,000 feet below the earth's surface, in caves. The silk that spiders spin for their webs has a stretching strength superior to most flexible products made by people. These webs have been known to catch and hold animals as large as mice. Any insect that gets stuck in the swinging web becomes the spider's next meal. Many scientists feel that without the spider, human life would be in danger. You see, most of a spider's energies are devoted to catching and eating insects. Without spiders, insects would multiply and cover the earth, destroying the vegetation. It has been estimated that each year spiders in England destroy an amount of insects equal in weight to the human population of the country.