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One theory, suggested by Harvard University, is that humans began cooking their

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One theory, suggested by Harvard University, is that humans began cooking their

One theory, ________ suggested by Harvard University, is that humans began cooking their food, thereby releasing nutrients locked in the raw food and reducing the time needed to chew it.

A．which B．as
C．that D．what

试题答案

B

解析

标签：beganhumansthatcookingthereby

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