Zhong Nanshan is a famous expert who has tothe 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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