单项选择题

A．The World War I.
B．The fact that films were less expensive.
C．The fact that films were silent
D．The fact that films were shorter.
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单项选择题
A．Storms and floods.B．Disease and fire.C．Less space for their growth.D．Rapid increase of the animal population.
A．Storms and floods.
B．Disease and fire.
C．Less space for their growth.
D．Rapid increase of the animal population.
单项选择题
The author feels it is a beautiful day, though it is windy, because he she has passed his her exams.
A．Y
B．N
C．NG
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