Chief Engineer Mike Myers’ expertise______ chemical materials has enabled him to

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问题 Chief Engineer Mike Myers’ expertise______ chemical materials has enabled him to move to the very top of his field.

选项 A、against
B、for
C、on
D、in

答案 D

解析选择与expertise语意连贯的介词。expertisein表示“在···方面的专长”。答案是(D)in。

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MemorandumTo:JuanGomezFrom:MariaJohnson,BuildingEngineerDate:17Jan.2