问题 选择题

调查发现经过装修的居室中由装饰材料缓慢释放出来的化学污染物浓度过高,会影响人体健康.这些污染物中最常见的是(  )

A.一氧化碳

B.二氧化谈

C.甲醛等化学性气体

D.臭氧

答案

甲醛、苯等常用于装饰材料的溶剂和防腐剂,二者对人体有害,为致癌物质,为装饰材料的主要污染物质,而一氧化碳、二氧化硫和臭氧不能由装饰材料释放出来.

故选:C

单项选择题
阅读理解

Now and again I have had horrible dreams, but not enough of them to make me lose my delight in dreams. To begin with. I like the idea of dreaming, of going to bed and lying still and then, by some queer magic, wandering into another kind of existence. As a child, I could never understand why grown-ups took dreaming so calmly when they could make such a fuss about any holiday, this still puzzles me. I am puzzled by people who say they never dream and appear to have no interest in the subject. It is much more astonishing than it would be if they said they never went out for a walk. Most people do not seem to accept dreaming as part of their lives. They appear to see it as an irritating little habit, like sneezing or yawning I can never understand this. My dream life does not seem as important as my waking life because there is far less of it, but to me it is important.

小题1:What is the author’s attitude toward dreaming?

A.He thinks it puzzling

B.He likes it

C.He is interested in it

D.He doesn’t accept it as part of his life小题2: For the author of the passage, dreaming is________.    .

A.another kind of existence

B.an irritating little habit

C.a horrible but wonderful experience

D.a true reflection of reality小题3:The author of the passage suggests that people who say they never go out for a walk are_____.

A.interesting

B.unbelievable

C.mysterious(难以理解的)

D.lazy小题4:Why does the author of the passage complain?

A.Because most people are overexcited about their dreams

B.Because most people are not interested in talking about their dreams

C.Because most people have had dreams most of the time

D.Because most people consider their dreams of too much importance