单项选择题

This main idea of the country

A．the formation of sugar
B．the role of water in a growing plant
C．the functions of carbon dioxide and water
D．the synthesis of water with carbon dioxide

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热门试题

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

单项选择题

Which of the following best describes people who work in large cities and live in villages

A．Normal.
B．Original.
C．Arrogant.
D．Insensitive.