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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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