Question

As space science develops, man has learned more and more about space. Space is not only amazing but also dangerous. While working in space, spacemen are facing danger as well as success.

Scientists have found out that the radiation（辐射）is the greatest danger to spacemen in space. When spacemen are working in space, they are in danger of the radiation from the sun and other stars, which is bad for their health. The harm of the radiation won’t be found until their children even grandchildren are born. Some special medicine may work a little, but no really effective medicine has been found so far.

Space rubbish is also thought to be a great danger to spacemen. It’s reported that there were 9,000 man-made things flying in space. About 30% of these are satellites, 10% are spaceships, and the rest are space rubbish. An explosion（爆炸）in space in 1999 made a cloud of 300,000 fragments, each at least 4mm in size. A small piece of these even knocked a spaceship window and caused some damage(损坏).

Scientists are watching and reporting any possible danger all the time. They are working to deal with space rubbish. Although space is really dangerous, it interests many people on the earth. In the near future, it may become possible for people to spend a few days in a space hotel. We may even choose to leave the earth and live in space in a few years. So we should do something to help improve the space environment.

1.. The writer mainly wants to tell his readers that the space is full of _____.

A. rubbish B. danger

C. satellites D. radiation

2.. How much does space rubbish take up of all the man-made flying objects?

A. 30% B. 40% C. 50% D. 60%

3. Which of the following statements is true according to the passage?

A. Some children have been born in space.

B. People are not supposed to live in space.

C. Some people are eager to have a space trip.

D. No one is dealing with space rubbish now.

4.. The underlined word “fragments” in the third paragraph probably means _____.

A. broken pieces B. flying dust

C. dangerous gases D. space radiation

5.. What is the main purpose（目的）for writing the passage?

A. To ask people not to pollute the space environment.

B. To develop people’s interests in space travel in the future.

C. To tell readers what scientists are doing about space rubbish.

D. To tell people that space is dangerous and what the dangers are.

 

Answer 1

1.B

2.D

3.C

4.A

5.D

【解析】

试题分析：随着空间科学的发展，人类已经了解越来越多的太空知识。太空不仅令人惊叹，而且危险。在太空中工作时，航天员面临危险以及成功。科学家们已经发现辐射是宇航员在太空中最大的危险。对于航天员来说太空垃圾也被认为是一个大的危险。在不久的将来，人们可能通常花几天住在太空旅馆。我们甚至可以选择离开地球，在太空生活几年。所以我们应该关心空间和做一些事情来帮助改善空间环境。

1.Space is not only amazing but also dangerous. While working in space, spacemen are facing danger as well as success.”可知太空中充满了危险，故选B。

2.About 30% of these are satellites, 10% are spaceships, and the rest are space rubbish.”可知60%是太空垃圾，故选D。

3..Although space is really dangerous, it interests many people on the earth. In the near future, it may become possible for people to spend a few days in a space hotel. We may even choose to leave the earth and live in space in a few years.”可知人们希望进入太空，故选C。

4.An explosion（爆炸）in space in 1999 made a cloud of 300,000 fragments, each at least 4mm in size.”可知前面提及的是爆炸，因此形成了碎片，故选A。

5.主旨大意题。通读全文知道作者告诉我们太空中充满了危险，又指出辐射和太空垃圾是比较大的危险，故选D。

考点：考查科普类阅读。