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题目内容
（华北水利水电大学混凝土结构设计原理）
______ that the trade between the two countries reached its highest point. ( )(本题2.0分)
A、 During the 1960’s
B、 It was in the 1960’s
C、 That it was in the 1960’s
D、 It was the 1960’s
A、 During the 1960’s
B、 It was in the 1960’s
C、 That it was in the 1960’s
D、 It was the 1960’s
参考答案