单项选择题

The blinds in the gap move according to ______.

A．the air currents in the gap
B．the sun’s rays
C．the weather outside
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单项选择题
A．downB．outC．up
A．down
B．out
C．up
单项选择题
Compared with other, traditional building, the amount of air-conditioning needed is ______.
A．very high
B．quite low
C．similar
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