问题补充：
the secret of nature, they young scientist has little time for entertainment.
A. Devoted to betray
B. Devoting himself to bring to light
C. Devoted to unearthing
D. Devoting to exploring
答案：
A. Devoted to betray
B. Devoting himself to bring to light
(答案→)C. Devoted to unearthing
D. Devoting to exploring
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