Question

【题目】When first to ___________ the market, these products enjoyed great success. ( )

A.introducingB.introduced

C.introduceD.being introduced

Answer 1

【答案】C

【解析】

本题考查动词不定式的用法。根据When first to the market，these products enjoyed great success. 可知当首次引入市场时，这些产品获得了巨大的成功。first to do sth表示第一次做某事。故选C。