2. 外语
  3. He decided to devote all his time and effort______scientific investigation.

He decided to devote all his time and effort______scientific investigation.

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问题 He decided to devote all his time and effort______scientific investigation.
选项 A、in
B、on
C、from
D、to
答案D
解析 本题考查动词搭配。devote one’s time／life／efforts to(doing)sth．是固定搭配，表示“奉献，把…奉献(给)，致力于”。故选D。
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