单项选择题

The main(主要的)idea of this passage is that satellites are now used in¬¬¬¬¬¬¬¬______.

[A] receiving pictures of the atmosphere
B. weather forecasting
C. taking pictures of the atmosphere
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单项选择题
Maybe we'll soon be able to forecast the weather for______ .
A． one day
B． seven days or even longer
C． five days
单项选择题
Uncle Li and Uncle Wang were unhappy because______.
[A] they had sustained losses in business
B. something was wrong with the tractor
C. they had lost some money in the city
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