问题
选择题
He________ his experiments and made a great contribution to our country. [ ]
A. dived himself into
B. devoted himself into
C. dived into
D. devoted to
答案
答案：C
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He________ his experiments and made a great contribution to our country. [ ]
A. dived himself into
B. devoted himself into
C. dived into
D. devoted to
答案：C