China’s reform and opening up in late 1978, its quick development has aroused worldwide
China’s reform and opening up in late 1978, its quick development has aroused worldwide
发布时间：2020-08-17 11:32:12
China’s reform and opening up in late 1978, its quick development has aroused worldwide attention, which has made America anxious about it. A. When B. As C. While D. Since
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A. When B. As C. While (答案→)D. Since 解析：选D。 since引导一个时间状语从句，或接一个短语时主句要用现在完成时。