非谓语动词一题

问题描述:

非谓语动词一题
Having mastered the technologies of manned spacecraft,China became the third country___manned spaceflight independently.
A.developing B.to develop

B
当一个名词没序数词修饰时,后面【作定语】的非谓语动词要用【不定式】
再如:
He was the first man to reach yhe top of the mountain.