1. (2021八下·武城月考) 阅读下列短文，然后从每小题A、B、C、D中选出能回答所提问题或完成所给句子的最佳答案。

    There is lots of junk(垃圾) in space. Some of it is from rockets. In 1996, a rocket broke into about 300,000 small pieces. So far, scientists have found over 10,000 man-made pieces flying around in space. Only 6-7％of them are satellites and space probes (探测器). Astronauts also lose small things while working in space. In 1965, during the first American spacewalk, astronaut Edward White lost a glove. For a month, the glove stayed in space, travelling at a speed of 28,000 kilometers per hour .It became the most dangerous piece of clothing for the Earth in history it flew away. Things move very fast in space. If they hit(碰撞)one another, it can be dangerous .A little piece of paint from a satellite once made a hole in a spacecraft window. Last year two US spacecraft dropped some bolts(螺栓), and scientists on the Earth worried a lot. Luckily the bolts floated(漂浮) away into space. They couldn't hit the spacecraft.

1. （1） Some junk in space is from         .

   A . space B . rockets C . scientists D . earth
3. （2） American astronaut Edward White once lost            in space in 1965.

   A . a rocket B . some bolts C . a glove D . a little piece of paint
5. （3） The glove in space may travel at a speed of        kilometers per hour.

   A . 300, 000 B . 28, 000 C . 10, 000 D . 21, 000
7. （4） In space all the things move very        .

   A . fast B . slow C . hard D . high
9. （5） If the junk in space hits one another it can be        .

   A . great B . interesting C . safe D . dangerous