问题补充：
He started to study ecology and decided to his whole life to the science.
A. ignore
B. devote
C. prefer
D. lead
答案：
A. ignore
(答案→)B. devote
C. prefer
D. lead
解析：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。
