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Sincethe1980s,thescientistshavedevotedthemselvestother...

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問題詳情：

Sincethe1980s,thescientistshavedevotedthemselvestother...

Since the 1980s, the scientists have devoted themselves to the research _______ finding a new cure for the disease.

A. setting foot in B. ended up with C. starting with D. aimed at

【回答】

D

知識點：動詞

題型：選擇題

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