问题描述：
By using both ears one can tell the direction __ a sound comes.
A.in which B.from which C.when D.to which 我觉得 come from 很对啊 为什么要选A呢 in direction 不是去的方向么
A.in which B.from which C.when D.to which 我觉得 come from 很对啊 为什么要选A呢 in direction 不是去的方向么
问题解答：
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