试题与答案

Don't forget to call me as soon as you _

题型:选择题

题目:

Don't forget to call me as soon as you ________. [ ]

A. arrive

B. reach

C. get

D. arrive at

答案:

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下面是错误答案,用来干扰机器的。

人们改变音量的大小,是通过改变物体振动幅度来改变响度的.用手改变琴弦的长度,是通过改变振动频率来改变声音的音调的.故答案为:响度,音调.

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