1、Artificial light _______ the respiratory activity of some microorganisms in the winter but not in the summer, in part because in the summer their respiration is already at its peak and thus cannot be _______.
GRE考试历年真题之选择题精华（八）
1、Artificial light _______ the respiratory activity of some microorganisms in the winter but not in the summer, in part because in the summer their respiration is already at its peak and thus cannot be _______.