Question

    Many people know that rubbish is a big problem on planet Earth. What many people don't know is that junk has become a problem in outer space too.

According to BBC News, there are more than 22, 000 pieces of space junk floating around the earth. And these are just the things that we can see from the surface of the earth by telescopes (望远镜). There are also millions of smaller pieces of junk that we can't see.

Objects, like bits of old space rockets or satellites, move around the planet at very high speeds, so fast that even a very small piece can break important satellites or become dangerous to astronauts. If the tiniest piece of junk crashed into a spaceship, it could damage the vehicle (交通工具).

To make things worse, when two objects in space crash, they break into many smaller pieces. For example, when a U. S. satellite hit an old Russian rocket in 2009, it broke into more than 2,000 pieces, increasing the amount of space junk.

To reduce additional space junk, countries have agreed that all new space tools can only stay in space for 25 years at most. Each tool must be built to fall safely into the earth's atmosphere after that time. In the upper parts of the atmosphere, it will burn up.

 Many scientists are also suggesting different ways to clean up space junk. In England scientists are testing a metal net that can be fired into space junk. The net catches the junk and then pulls it into the earth's atmosphere to burn up. The Germans are building robots that can collect pieces of space junk and bring them back to Earth to be safely destroyed.

 "The problem is becoming more challenging because we're sending more objects into space to help people use their mobile phones and computers," says Marco Castronuovo, an Italian space researcher.

 "The time to act is now. The longer we leave the problem, the bigger it will become," he says.

1.Junk has become a problem in ________ too.

2.What would happen if the tiniest piece of junk crashed into a spaceship?  

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3.Why have countries agreed that all new space tools can only stay in space for 25 years at most?   

___________________________________________________

4.找出并写下第六段的主题句   

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5.将文中画线句子译成汉语。 

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Answer

1.outer space

2.It would damage the vehicle.

3.To reduce additional space junk./ In order to reduce additional space junk.

4.Many scientists are also suggesting different ways to clean up space junk.

5.我们把这个问题搁置的时间越长，它就会变得越大。

【解析】

本文大意： 许多人知道垃圾是地球上的一个大问题。 很多人不知道的是，垃圾在外太空已经成为一个问题。

1.细节理解题，根据第一段What many people don't know is that junk has become a problem in outer space too. 可知，垃圾在外太空已经成为一个问题。故答案为outer space。

2.根据If the tiniest piece of junk crashed into a spaceship, it could damage the vehicle (交通工具).可知， 如果最小的一块垃圾撞上太空船，它可能会损坏交通工具。故答案为It would damage the vehicle.

3.根据To reduce additional space junk, countries have agreed that all new space tools can only stay in space for 25 years at most. 可知，为了减少额外的太空垃圾。故答案为To reduce additional space junk./ In order to reduce additional space junk.

4.段落大意题，一般一句话的主题句通常在第一句或者最后一句，根据第六段的内容 In England scientists are testing a metal net that can be fired into space junk. The net catches the junk and then pulls it into the earth's atmosphere to burn up. 可知， 许多科学家也建议用不同的方法来清理太空垃圾。故第一句是本段的主题句。故答案为Many scientists are also suggesting different ways to clean up space junk.

5.翻译题，the longer…...the bigger…...越长…..越大……，we我们；leave留下，丢下；the problem这个问题；become成为。故答案为我们把这个问题搁置的时间越长，它就会变得越大。