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.

根据短文内容，选择正确答案。

1.Of all the man-made things in space, about ________of  these are space rubbish.

A. 10%          B.60%          C.100%      D.30%

2. The underlined word “fragments” means “______”.

A. 碎片         B. 泡沫         C. 烟雾      D. 飞碟

3. The passage talks about _________ kinds of danger in space.

A. two           B. three          C. four      D. five

4.Which of the following is TRUE?

A. Scientists have found out ways to solve any problem in space.

B. Every one of us can have a travel to space in ten years.

C. The harm of the radiation may be found in the spacemen’s children.

D. Space is really dangerous, so it doesn’t interest anyone on the earth.

Answer

1.B

2.A

3.A

4.C

【解析】

试题分析：本文叙述了宇航员在天空遇到的危险。可知在太空中宇航员可能遇到的两种危险有：辐射和太空垃圾。辐射的危害可能知道宇航员的孩子甚至孙子才被发现。在太空中人造的东西中，大约有30%是人造卫星，10%是太空飞船，剩下的都是太空垃圾。爆炸会产生碎片，一片小的碎片会给飞船带来损害。科学家正在观察和报道太空中的危险，正在想办法解决这些危险。

1.推理判断题。根据About 30% of these are satellites, 10% are spaceships, and the rest are space rubbish.可知人造的东西在太空中成为垃圾的比例为1-30%-10%=60%。故选B。

2.词义猜测题。根据A small piece of these even knocked a spaceship window and caused some damage（损坏）.可知爆炸会产生碎片，一片小的碎片会给飞船带来损害。故选A。

3.细节理解题。根据Scientists have found out that the radiation(辐射)is the greatest danger to spacemen in space.和 Space rubbish is also thought to be a great danger to spacemen.可知在太空中宇航员可能遇到的危险有：辐射和太空垃圾，共两种。故选A。

4.细节理解题。根据The harm of the radiation won’t be found until their children even grandchildren are born.可知辐射的危害可能在宇航员的孩子甚至孙子身上发生。故选C。

考点：科普环保类短文阅读。