问题 选择题

绿色植物蒸腾作用的意义不包括(  )

A.降低叶片的温度

B.促进植物对水分的吸收

C.增加空气湿度,增加降水量

D.有利于植物进行呼吸作用

答案

植物体通过蒸腾作用散失掉的水分只有1%~5%参与组成植物体和用于维持生理过程,其余大部分的水分都通过蒸腾作用散失掉了.但是,植物体通过蒸腾作用消耗水分不是简单地浪费,它对植物体自身的生命活动有着非常重要的意义.蒸腾作用能促进植物体从土壤中吸收水分,促进水分和无机盐从根部输送到茎、叶等器官,还能使植物体有效地散热,增加空气的湿度,增加降雨量.

故选:D

阅读理解

A study of a university in Shanghai had found that many of the students there are using a quote(引语)from the Italian poet Dante as a kind of motto. The study of Fudan University, one of China’s top universities, of 489 students, found that 82 had chosen Dante’s “Follow your own path and don’t worry about what others say” as their motto, out of 278 people who said they had a motto. This was followed by “Believe yourself” and “Self-improvement without stop.”

Students also expressed a common hope for greater understanding and care and said they were always ready to give a hand to those in need. Some researchers think that mottoes can play an important part in children’s growth and they say that a good motto can help children develop a better character.

小题1:The study shows ________.

A.which university should have mottoes

B.who should have “Follow your own path and don’t worry about what others say” as their motto

C.how many students like the motto “Believe yourself.”

D.many students choose a quote from Dante as their favorite motto小题2:Of the students asked, ________ students have mottoes.

A.about 78%

B.about 57%

C.about 16%

D.about 8%小题3:The motto “Self-improvement without stop” shares the similar meaning with ________.

A.going on to improve rapidly

B.growing by oneself continuously

C.making oneself better and perfect continuously

D.becoming better without having a break小题4:The best title for the passage should be _______.

A.Mottoes and Character Developing

B.Students and Poet

C.Mottoes and Learning

D.Understanding Care

填空题