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 radiation(辐射)is the greatest danger to spacemen in space.When space men are working in space, they are in danger of radiation from the sun and other stars, which is bad for their health.The damage(危害)done by radiation won’t be discovered until their children or even grandchildren are born.Some special medicine may work a little, but no really helpful medicine mas been.

Space junk(垃圾)is also thought a great danger to spacemen.It's reported that there are 9,000 man-made things flying in space.About 30%of these are satellites(卫星), 10%are spaceships, and the rest are space junk.An explosion(爆炸)in l996 made a cloud of 300,000 fragments, each at least 4ram in size, and even a small piece of these knocked against a spaceship window and did some damage.Scientists are watching and reporting any possible danger all the time.They are working on helpful ways to do with space junk.

Although space is really dangerous, it interests everyone on the earth.In the near future, it may become usual 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 care for space and do something to help improve the space environment.

根据短文内容选择最佳答案。

1.         shows the man-made things in space in the correct way.

2.Space junk and radiation in space are dangerous to              

A.spacemen working in space

B.people only on the earth

C.all the people except children

3.The underlined word “fragments” means            

A.碎片                   B.泡沫                    C.烟雾

4.Which of the following about the passage (短文)is TRUE?

A.The passage tells us that radiation in space comes from the sun and other stars.

B.Every one of us can make a trip to space now.

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

5.%e best title(标题)of the passage is                

A.Space Radiation     B.Space Danger       C.Space Junk

    One day an American called Simon went to London to visit his friend,Rick.Rick told him that his flat was on the first floor.When he arrived,Simon went straight to the first floor of the building.But he was told that there was no Rick on that floor.Do you know why?

    In fact.the British call the first floor of a building the ground floor.The floor above the ground floor is the first floor,which Americans would call the second floor.

    The story shows that there are a few culture differences between Britain and America,though the British and Americans both speak English.

    The British usually hide their feelings.They seldom start a conversation with strangers.For example, on the train the British often spend their time reading newspapers or books.But Americans are quite different.They’re more active and easier to talk with.

    The British and Americans may use different terms for many things.The British usually use football,eraser and mail while Americans prefer to use soccer,rubber and post.

1.Simon went to London to ________.

   A.visit his friend               B.spend his holiday

   C.study English                  D.have a meeting

2.Which picture shows US where Rick’s flat was? ________.

3.According to the passage,the British usually spend their time ________on the train.

   A.playing cards                       B.talking loudly

   C.doing some reading                 D.singing and dancing

4.What does the underlined word “terms" mean in Chinese in the passage?

    ________.

   A.成果       B.学期      C.会议 D.用语

5.What’s the best title for the passage? ________.

   A.Differences in culture           B.Simon’s funny story

   C.Information abroad          D.Hiding the feelings

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