单项选择题

A．Where cool air hits mountains.
B．Where lightning occurs.
C．Near electrical wires.
D．Underneath the clouds.
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单项选择题
A．Its size.B．Its newspaper.C．Its radio station.D．Its weather.
A．Its size.
B．Its newspaper.
C．Its radio station.
D．Its weather.
单项选择题
A．If she is in good health.B．If she has corresponded with her relatives recently.C．If she is about to write to her friends.D．If she still receives a lot of letters.
A．If she is in good health.
B．If she has corresponded with her relatives recently.
C．If she is about to write to her friends.
D．If she still receives a lot of letters.
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