The speed______is 340 meters per second.A、at which sound travelsB、with which so

游客2025-03-01 7

问题 The speed______is 340 meters per second.

选项 A、at which sound travels
B、with which sound travels
C、of which sound travels
D、for which sound travels

答案 A

解析本题考查定语从句。句意：声音传播的速度是每秒340米。首先确定引导词用which，如果介词不前置的话，句子的顺序应该是the speed which sound travels at。与speed搭配的是介词at，故本题选A。

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Thespeed______is340meterspersecond.A、atwhichsoundtravelsB、withwhichso