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参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Most growing plants contain much more water than all other materials combined. C.R. Dames has suggested that it is as proper to term the plant a water structure as to call a house composed mainly of b...
A.
to derive energy from light
B.
to preserve water
C.
to combine carbon dioxide with water
D.
to form sugars