WiththesuccessfullaunchofTiangong-I,whichwas
問題詳情:
With the successful launch of Tiangong-I, which was ______ breakthrough in space field, China's space dream took a step closer to ______ reality.
A. a; / B. the; a C. a; the D the; /
【回答】
A
知識點:冠詞
題型:選擇題