1. (2019八下·天台期末) 阅读理解

    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 300,000fragments, 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. People may even choose to leave the earth and live in space in a few years. So scientists are doing everything they can to help improve the space environment.

1. （1） How many kinds of dangers in space does the passage mention?

   A . One. B . Two. C . Three. D . Four.
3. （2） Which of the following is TRUE?

   A . Scientists have found out many ways to solve problems in space. B . People can have a travel to space or even live in 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 only interests scientists on the earth.
5. （3） ______ shows the man-made things in space in the correct way.

   

   A . B . C . D .
7. （4） The main purpose of this passage is to ______.

   A . introduce what the space environment is like now B . warn us the dangers in the space environment now C . tell us spacemen are working hard to improve the space environment  D . explain why space rubbish has caused lots of damage to the environment