Just as the tree is the unit of a forest and the book the unit of a library, the molecule

发布时间：2020-08-16 10:41:00

Just as the tree is the unit of a forest and the book the unit of a library,      the molecule is the unit of matter.
A. as
B. like
C. so
D. thus

网友回答

A. as
B. like
(答案→)C. so
D. thus
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