你是一个小淘气吗？哦，你一定是一个爱干净、守规矩的孩子。但是，你要知道，小淘气们也有他们惹人喜爱的一面，他们的一举一动，有时也会给我们带来快乐和欢笑。

　　“Have you washed your hands and face?” Billy's mother asked him. “Yes,” he said. “Show me.” He showed his mother his hands.

　　“They are filthy,” she said. “And your face is covered with dirt.” She pulled him into the bathroom. “Now wash your face and hands,” she said.

　　He did as she told him, but he hated doing it.

　　“Are you afraid of soap and water?” his mother asked him.

　　“No, I am not afraid of them.” He said. “I just don't like them. I hate washing.”

　　When he left the house he was clean. By the time he got to school he was dirty again.

　　“Look at you!” his teacher shouted. “Your face is dirty. If your hands are dirty, too, you will be in trouble. Hold out your hands.”

　　Billy knew his hands were dirty. He quickly spit on one and rubbed it on his pants. Then he showed it to the teacher.

　　“That is not a clean hand, Billy,” she said. “It is the dirtiest hand in the class. I am going to punish you.”

　　Billy looked around the class. “It's not the dirtiest hand in the class,” he said. “All right, Billy.” The teacher said. “If you can show me a dirtier hand, I won't punish you.”

　　With a smile, Billy quickly showed her his other hand.

1．How did Billy feel about washing his hands and face?

[　　]

A．He didn't mind.

B．He liked it.

C．He hated it.

D．He was too busy to do it.

2．Why was his teacher angry with him?

[　　]

A．He was late for school.

B．He hadn't done his homework.

C．His hands and face were very dirty.

D．He wouldn't show her his hands.

3．What did the teacher think about the hand Billy showed her?

[　　]

A．It was dirty.

B．It was the cleanest in the class.

C．It was the dirtiest hand in the class.

D．It had been cleaned with spit.

4．How did Billy know his hand was not the dirtiest in the class?

[　　]

A．The teacher had very dirty hands.

B．The other children had filthy hands.

C．The dirtiest hand was his other hand.

D．He could see the dirtiest hand.

5．What did the teacher do with Billy at last?

[　　]

A．She didn't care about it.

B．She punished Billy.

C．She praised Billy.

D．She helped Billy to wash his hands.

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