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
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单项选择题
Satellites travel______.
A．in space
B．in the atmosphere
C．above the ground
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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