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He started to study ecology and decided to  _______his whole life to the science.
A.ignoreB.devoteC.preferD.lead
B
词义辨析。Ignore忽视,不理会;devote献身于,致力于;prefer更喜欢;lead
通向,导致。句意:他开始学习生态学,决心把整个生命都致力于科学。所以选B。
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