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【简答题】
绿色蔬菜在加工贮藏过程中，由鲜绿色转化为暗褐色，这主要是因为叶绿素转化为（）。
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【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
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【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
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