题目

A giraffe (长颈鹿) gets most of the water it needs from leaves and so it can go for more than a month _____ drinking. A. except   B. through   C. without   D. besides   答案:C在反应中,氧化剂与还原剂的分子数比为[  ] A.2∶1B.1∶2 C.3∶1D.1∶3
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