单项选择题

The second paragraph uses facts to develop the idea, a that ______.

A．the stronger the wind, the more the water vapor loss
B．carbon dioxide is the essential for plant development
C．a plant needs more water than is found in its composition
D．a plant efficiently uses most of the water it absorbs

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单项选择题

According to the passage, which of the following statements is TRUE

A．The mineral elements will not be absorbed by the plant unless they are dissolved in its root.
B．The stems contain more water than the leaves.
C．Air around the leaf is found to be saturated.
D．Part of the carbon dioxide in the plants is synthesized.

单项选择题

A growing plant needs water for all of the following except ______. A) forming simple sugars C) keeping green B) keeping woody stems D) producing carbon dioxide

A．A growing plant needs water for all of the following except ______.
B．forming simple sugars
C．keeping woody stems
D．keeping green
E．producing carbon dioxide