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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
题目内容：
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
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
Having mastered the technologies of manned spacecraft,China became the third country___manned spaceflight independently.
A.developing B.to develop
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