问题 填空题

当遇到巨大声音响时,应迅速______,其原因是可以使______张开,保持______内外大气压的平衡,以免振破______.

答案

当听到巨大声响时,空气震动剧烈导致耳膜受到的压力突然增大,容易击穿鼓膜.这时张大嘴巴,可以使咽鼓管张开,保持鼓膜内外大气压的平衡,以免振破鼓膜.如果闭嘴同时用双手堵耳也是同样道理,这样就避免了压强的突然改变,对鼓膜的影响.

故答案为:张嘴;咽鼓管;鼓膜;鼓膜.

阅读理解

THE WAY TO READ FAST

Perhaps you have been told about some habits(习惯) which stop a person reading fast、and have been strongly asked to break those habits which you might have.

Do you still have any of these bad habits7 Check yourself by answering "yes" or "no" to

these questions:

1. Do you move your lips(嘴唇) when reading silently?

2. Do you point to words with your finger as you read?

3. Do you move your head from side to side as you read?

4. Do you read one word at a time?

If you answer "yes" to any of these questions, start at once to break the habit.

If you move your lips, hold your fingers over them, or hold a piece of paper between your lips while you are reading. Then if your lips move, you will know it and can stop them.

If you point to words, hold the two sides of your book, one side with your left hand, the other side with your right hand. Then you will not have a free finger to use in pointing while reading.

If you move your head, place your chin(下巴)in one hand, and hold your head still(不动地,静止地).

If you read no more than one or two or three words at a time, you need to work very hard in learning to take in more words at each glance(看一眼) as your eyes travel across the lines of words.

小题1:You may hold your fingers over your lips while reading       

A.to hold a piece of paper between them

B.to stop yourself talking to others

C.to tell others to be silent

D.to feel whether y our lips move or not小题2:When your eyes travel across the lines of words,        

A.you need to read the words out

B.you need to look at every word carefully

C.you need to read several words at a time

D.you need to remember every word小题3:When you read,        

A.don’t use your finger to point to words

B.don’t hold your books with your hands

C.don’t hold your head still

D.don’t do any of the things mentioned(提到)above.

单项选择题