2. 外语
  3. Zhong Nanshan is a famous expert who has______ to______the origin of SARS.

Zhong Nanshan is a famous expert who has______ to______the origin of SARS.

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问题 Zhong Nanshan is a famous expert who has______ to______the origin of SARS.
选项 A、devoted: studying
B、been devoted: studying
C、devoted: study
D、been devoted: study
答案B
解析 句意：钟南山是位著名的专家，他投身于SARS病毒的研究。be devoted to doing专心于，投身于，献身于。
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