题目

Can you solve such problems___raised by the audience?A.what were B.as were C.that were D.which were 答案:【答案】B【解析】考查定语从句。句意:你能解决被观众提出的这样的问题吗?这是一个定语从句,先行词为problems(问题),且从句中缺少主语,因此用关系代词。又由于such as是固定搭配,因此不用that或which做关系词,关系词应用as。故选B。一列沿x轴正向传播的横波在某时刻的波形图如图甲所示。a、b、c、d为介质中沿波的传播方向上四个质点的平衡位置,若从该时刻开始计时,则图乙是下面哪个质点经过个周期后的振动图象  A. a处质点         B. b处质点           C. c处质点                  D. d处质点
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