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【单选题】
捕蝇草具有叶绿素，可制造有机物，其捕食昆虫的主要目的是什么？（）
A.
从昆虫处获得氮，以合成蛋白质
B.
从昆虫处获得水分，以合成糖类
C.
从昆虫处获得矿质元素，以合成辅酶
D.
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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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