In many high schools，there are strict rules about using mobile phones. If your phone rings in class，for example，the teacher will be very angry.

Every mobile phone has a ringtone (铃声). It tells you that someone is calling you. Now，there is a ringtone called “mosquitotone (蚊子铃声)”. Using it，students can receive calls and text messages (短信) in class but the teacher will not realize what is happening. How?

Mosquitotone has a special sound. Only children and teenagers can hear it. As we get older，we are unable to hear some sounds with high frequencies (频率). As a result，a child or teenager can hear the mosquitotone ringtone, but it’s_inaudible_to someone 20 or older.

But sometimes，people over 20 can hear the ringtone. One British student’s phone uses mosquitotone. In class，the student’s phone rang. The 32­year­old teacher looked at the student and became unhappy. “I heard that. You know the rule：no mobile phone in class.”

Not all the students are interested in mosquitotone. Jerry Jones，a high school student of 17，says，“Using mosquitotone too often is bad for our hearing. I may use it for pleasure，but not in class. It’s unfair to the teachers！”

What do parents think of mosquitotone？“I think it is perfect for places like movie theaters，” says Connie Neeson,44.“Think about it. Yon’re watching a film and someone’s mobile phone rings. Mosquitotone is good because many people don’t hear it. However，it also has a bad influence on their study if students use it in class.”

1.Mosquitotone works because ________.

A. it is very loud                  B. it has no sound

C. it has a beautiful sound         D. it uses high frequencies

2.The under lined part “it’s_inaudible_to” means “________”．

A. it can’t be seen by             B. it can’t be heard by

C. it isn’t popular with           D. it isn’t healthy for

3.The 32­year­old teacher felt unhappy because the student ________.

A. was late for class  B. didn’t do his homework

C. couldn’t answer her question          D. was using a mobile phone in class

4.Connie Neeson thinks that mosquitotone ________.

A. has no bad influence             B. is unfair to the teachers

C. has its advantage and disadvantage  D. can’t be used in any public place

In England nobody under eighteen years old is allowed (允许) to drink in a bar (酒吧)．

Mr. Thompson often went to a bar near his house．But he never took his son, Tom, because he was too young．Then when Tom had his eighteenth birthday, Mr. Thompson took him to his usual bar for the first time．They drank for an hour．Tom drank a bit．Then Mr. Thompson said to his son, “Now, Tom, I want to teach you a useful（有用的） lesson．How do you know when you’ve had enough（足够的）? Well, I’ll tell you．Do you see those two lights（灯） at the end of the bar? When they seem（好象） to become four, you’ve had enough and should（应该） go home．”

“But, Dad,” said Tom, “I can only see one light at the end of the bar．”

31. Young people ______ allowed to drink in a bar until eighteen．

A. is not        B．are not       C．many      D．must

32. When Tom was a child, his father often went to a nearby bar_____ taking him．

A. by           B．for          C．with      D．without

33. On Tom’s eighteenth birthday, he drank together with his father in that bar

for______.   

A．the first time           B．once      C．many times            D．eighteen times

34. Father wanted to tell his son ______．

A. the time to drink          B．something about the light

C. when to stop drinking     D．something about the bar

35. In fact (事实上), there ______ at the end of the bar．

A. was one light      B．were two lights    C. were three lights      D．were four lights

　　In England nobody under the age of eighteen is allowed (允许) to drink in a public bar (公共酒吧). Mr. Brown usually went to a bar near his house, but he 1 took his son, Tom, because he was too 2 Then, 3 Tom's 18th birthday, Mr. Brown took him to his usual bar 4 the first time. They drank for half an hour, and then Mr. Brown 5 , “Now, Tom, I will tell you a 6 . You must always be careful not to drink too much. And how do you know when you've had 7 ? Well, I'll tell you. Can you see those two lights 8 the end of the bar? When they seem to have become 9 , you've had enough and 10 go home.”

　　“But Dad,” said Tom, “I can see only one light there!”

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Please bring some books ________ school.

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