问题 选择题

在擦玻璃时.人们时常向玻璃上“哈气”,再擦会更干净.这说明与空气相比,人体呼出的气体中含有较多的(  )

A.氮气

B.一氧化碳

C.二氧化碳

D.水蒸气

答案

擦玻璃时的哈气就是在玻璃表面形成一层水膜,起到湿润作用,相比较而言呼出的气体含水量变高啦.氮气、二氧化碳等气体与擦玻璃无关.

故选D

单项选择题
阅读理解

To me, life without music would not be exciting. I realize that this is not true for everybody. Many people get along quite well without going to the concert, and listening to the record. But music plays an important part in everyone's life, whether he realizes it or not. Try to imagine, for example, what films or TV plays would be like without music. Would the feelings, the moving plot, and the greatest interests, be so exciting or dramatic? I'm not sure about it.

Now, we have been speaking of music in its more common meaning----the kind of music we hear in the concert hall. But if we look at some parts of music more closely, we discover them in our everyday life too----in the rhythm of the sea, the melody of a bird in the woods and so on. So music surely has meaning for everyone, in some way or other. And, of course, it has special meaning for those who have spent all their lives working on playing or writing music.

It is well said, “Through music a child enters into a world of beauty, expresses himself from his heart, feels the joy of doing things alone, learns to take care of others, develops his mind and makes his body strong.”

小题1:What dose the writer say more about in the text?

A.Life full of music.

B.Life without music.

C.The importance of music.

D.The development of music.小题2:From the text, we learn that many people________.

A.don't realize the importance of music

B.get along quite well without music

C.go to the concert instead of enjoying music

D.think music would be less exciting than films小题3:What does the underlined word “melody” mean in the text?

A.flying

B.looking

C.singing

D.living小题4:From the last paragraph, we learn that music________.

A.is very important, especially for children

B.is very necessary for our everyday life

C.can make our life exciting and dramatic

D.can enter into another beautiful world