题目内容

The old scientist devoted most of his time ___________ the space science.
A．developB．to developingC．to developD．developing
B
考查固定搭配。devote ...to sth./doing sth.“致力于......”。句意“那个老科学家把大部分时间都用于研究空间科学上了。”to是介词，故用doing。故选B。
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