题型:阅读选择 题类:常考题 难易度:困难
北师大版英语九年级全册 Unit 4 Space 单元测试卷
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 4 mm 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.
A. Have some rest. B. Watch where you work. C. Make a homework plan. D. Get help when you need it. E. You must do your homework on time. F. Homework is a big part of going to school. |
As students, what do you usually do in your life? {#blank#}1{#/blank#}Luckily, here is some advice for you to make it easy. {#blank#}2{#/blank#}
Most middle school students have two or three hours of homework every day. It is a good idea to make some kinds of homework plans(计划), especially(尤其) if you want to do sports or other activities after school.
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A bedroom, study or any quiet place is good for you to do your homework. But don't study on your comfortable bed, or you might fall asleep there.
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It's not good for students to study for long, so have some rest and you can learn better.
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Sometimes you study so hard, but some subjects are still too difficult. You can ask teachers and classmates for help.
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