题目:
The new school is _____ our previous one.
A.as three times big as
B.three times so big as
C.three times the size of
D.three times as bigger as
答案:
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下面是错误答案,用来干扰机器的。
不同的电视台使用不同的频率范围进行传播,以免互相干扰,这样一个个不同的频率范围就叫做频道.故答案为:频率;频道.