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    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.
    小题1: ______ shows the man-made things in space in the correct way.
       
    A．B．C．D．
    小题2:The radiation from the sun and other stars is ______ to spacemen.
    A．goodB．helpfulC．usefulD．harmful
    小题3: The underlined word “fragments”means “______”.
    A．碎片B．泡沫C．烟雾D．飞碟
    小题4: The passage talks about _________ kinds of danger in space.
    A．twoB．threeC．fourD．five
    小题5: 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.

    小题1:B
    小题1:D
    小题1:A
    小题1:A
    小题1:C
    【主旨大意】文章介绍了宇航员们在太空当中也会面临着许多危险，其中主要是辐射和太空垃圾的威胁；辐射对宇航员们的伤害可能会在他们的第二代甚至第三代身上表现出来；太空垃圾中有一些是人造垃圾。太空垃圾对人们探测宇宙有很大的。
    小题1:B 推理判断题  由第三段中的句子“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.”可推断出选项B是正确答案；
    小题1:D细节理解题  根据第二段的句子“Scientists have found out that the radiation（辐射） is the greatest danger to spacemen in space. ”可知道辐射是有害的，故选D；
    小题1:A词意猜测题  根据下文中的small piece等可以看出该词意为“碎片”，故答案选A；
    小题1:A总结归纳题  文章中共提到了两种太空威胁：一种是辐射；另一种是太空垃圾，故正确答案选A。
    小题1:C 推理判断题 根据文中第一段中的句子“ The harm of the radiation won’t be found until their children even grandchildren are born.”可得到正确答案为C。
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