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C
Now satellites are helping to forecast（预报）the weather. They are in space, and they can reach any part of the world. The satellites take pictures of the atmosphere（大气）, because this is where the weather forms（形成）. They send these pictures to the weather stations. Some meteorologists（气象学家）can see the weather of any part of the world. From the pictures, the scientists can often say how the weather will change.
Today, nearly five hundred weather stations in sixty countries receive satellite pictures. When they receive new pictures, the meteorologists compare（比较）them with earlier ones. Perhaps they may find that the clouds have changed during the last few hours. This may mean that the weather on the ground may soon change, too. In their next weather forecast, the meteorologists can say this.
So the weather satellites are a great help to the meteorologists. Before satellites were invented, the scientists could forecast the weather for about 24 or 48 hours. Now they can make good forecasts for three or five days. Soon, perhaps, they may be able to forecast the weather for a week or more ahead（提前）.
7. We use the weather satellites to take pictures of the atmosphere because
A. the weather satellites can do it easily
B. clouds form there
C. the weather forms there
D. the pictures can forecast the weather
8. Meteorologists forecast the weather
A. when they have received satellite pictures
B. after they have compared new satellite pictures with earlier ones
C. before they received satellite pictures
D. during they study satellite pictures
9. Maybe we'll soon be able to forecast the weather for
A. one day
B. two days
C. five days
D. seven days or even longer
10. The main（主要的）idea of this passage is that satellites are now used in
A. taking pictures of the atmosphere
B. receiving pictures of the atmosphere
C. doing other work in many ways
D. weather forecasting
Now satellites are helping to forecast（预报）the weather. They are in space, and they can reach any part of the world. The satellites take pictures of the atmosphere（大气）, because this is where the weather forms（形成）. They send these pictures to the weather stations. Some meteorologists（气象学家）can see the weather of any part of the world. From the pictures, the scientists can often say how the weather will change.
Today, nearly five hundred weather stations in sixty countries receive satellite pictures. When they receive new pictures, the meteorologists compare（比较）them with earlier ones. Perhaps they may find that the clouds have changed during the last few hours. This may mean that the weather on the ground may soon change, too. In their next weather forecast, the meteorologists can say this.
So the weather satellites are a great help to the meteorologists. Before satellites were invented, the scientists could forecast the weather for about 24 or 48 hours. Now they can make good forecasts for three or five days. Soon, perhaps, they may be able to forecast the weather for a week or more ahead（提前）.
7. We use the weather satellites to take pictures of the atmosphere because
C
.A. the weather satellites can do it easily
B. clouds form there
C. the weather forms there
D. the pictures can forecast the weather
8. Meteorologists forecast the weather
B
.A. when they have received satellite pictures
B. after they have compared new satellite pictures with earlier ones
C. before they received satellite pictures
D. during they study satellite pictures
9. Maybe we'll soon be able to forecast the weather for
D
.A. one day
B. two days
C. five days
D. seven days or even longer
10. The main（主要的）idea of this passage is that satellites are now used in
D
.A. taking pictures of the atmosphere
B. receiving pictures of the atmosphere
C. doing other work in many ways
D. weather forecasting
答案
7.C 8.B 9.D 10.D
解析
【分析】本题为英语阅读理解题，需先通读原文把握文章大意，再针对每道题目回到原文定位关键信息，对比选项与原文内容，选出符合要求的答案。
【解析】
7. 定位原文第一段关键句：“The satellites take pictures of the atmosphere, because this is where the weather forms.”可知，卫星拍摄大气照片的原因是天气在大气中形成，对应选项C。
8. 定位原文第二段关键句：“When they receive new pictures, the meteorologists compare them with earlier ones... In their next weather forecast, the meteorologists can say this.”可知，气象学家是在将新卫星图片与旧图片比较后进行天气预报，对应选项B。
9. 定位原文最后一句：“Soon, perhaps, they may be able to forecast the weather for a week or more ahead.”可知，未来可预报一周或更久的天气，对应选项D。
10. 通读全文，文章围绕气象卫星帮助预报天气展开，核心主旨是卫星用于天气预报，对应选项D。
【答案】7.C 8.B 9.D 10.D
【知识点】英语阅读理解、细节理解、主旨大意
【点评】本文介绍了气象卫星在天气预报中的应用，题目侧重考查原文细节信息的查找与理解，以及对文章主旨的把握，整体难度不大，需学生仔细定位原文对应内容。
【难度系数】0.7
【解析】
7. 定位原文第一段关键句：“The satellites take pictures of the atmosphere, because this is where the weather forms.”可知，卫星拍摄大气照片的原因是天气在大气中形成，对应选项C。
8. 定位原文第二段关键句：“When they receive new pictures, the meteorologists compare them with earlier ones... In their next weather forecast, the meteorologists can say this.”可知，气象学家是在将新卫星图片与旧图片比较后进行天气预报，对应选项B。
9. 定位原文最后一句：“Soon, perhaps, they may be able to forecast the weather for a week or more ahead.”可知，未来可预报一周或更久的天气，对应选项D。
10. 通读全文，文章围绕气象卫星帮助预报天气展开，核心主旨是卫星用于天气预报，对应选项D。
【答案】7.C 8.B 9.D 10.D
【知识点】英语阅读理解、细节理解、主旨大意
【点评】本文介绍了气象卫星在天气预报中的应用，题目侧重考查原文细节信息的查找与理解，以及对文章主旨的把握，整体难度不大，需学生仔细定位原文对应内容。
【难度系数】0.7
