2. 外语
  3. The energy gained from the sun can then be used during the night to enable the necessary chemical reactions to ______ in his bod

The energy gained from the sun can then be used during the night to enable the necessary chemical reactions to ______ in his bod

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问题 The energy gained from the sun can then be used during the night to enable the necessary chemical reactions to ______ in his body.
选项 A、conduct
B、proceed
C、progress
D、practice
答案B
解析 proceed vi．进行。
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