题目

为了探测莫霍面情况,在下面四点同时进行了地震波的测定,其中最迟接收到从莫霍面传来的地震波的地点是( ) A . 四川盆地 B . 青藏高原 C . 长江中下游平原 D . 华北平原 答案:B —Sorry, what did you say just now? —I asked ________. A.when did he leave                            B.where you have been C.whom will you go with                       D.how I could get to the station
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