The second paragraph uses facts to develop the idea that ______ .A．a plant needs more wate

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

A．a plant needs more water than is found in its composition

B．a plant efficiently utilizes most of the water it absorbs

C．the stronger the wind, the more water vapor the plant loses.

D．carbon dioxide is the essential substance needed for plant development

正确答案：A
解析：段落主旨大意归纳题。第二段第一句是本段的topic sentence：植物在任何特定时期的含水量都只是其生长过程中总需量的一小部分，由此推出A正确(第二段采用事实以说明植物所需水分比实际含水量多得多)。