In many high schools，there are strict rules a...

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

九年级英语阅读理解简单题查看答案及解析

阅读下面短文，在空白处填入一个适当的词，或填入括号中所给单词的正确形式。

There are many school rules in our school.For example，we have to get to school early in 1. morning.I don't agree 2. that because it's so early that we don't have enough sleep.What's 3.(much)，we can't take mobile phones to school.If we do，our teachers will 4.(is) angry and take our mobile phones away.In 5.(I) opinion，we should be 6.(allow) to do that.Mobile phones now are very useful.We can use them not only to communicate with parents and friends in time but also 7.(search) for information on the Internet.8.(it) bring us many conveniences.What's worse，we have to take extra(额外的)classes on weekends.To be honest，9.(take) extra classes doesn't work very well.

All in all，school rules are good for us teenagers，10.some are too strict.I think some of them should be changed.

九年级英语语法填空中等难度题查看答案及解析

— My sister has many strict rules in her school.

— ______________.

A. So do I        B. So did I         C. So have I       D. So I have

九年级英语单项填空中等难度题查看答案及解析

-How many students are there in your school?

-There are about eight_______ students.

A. hundred　　   B. hundreds　　　　  C. hundreds of　　  D. hundred of

九年级英语单选题中等难度题查看答案及解析

读下面一段短文，根据上下文意思用方框内的所给词的适当形式填空。

In 1. （I）school , the rules for students are very strict, but I think they are necessary. Following the rules is everyone’s duty. They keep the students from fighting, smoking, 2.　 （make）noise in class and so on.

Most of the 3. ( student) can follow the rules. But some problem students often break the rules. They destroy public things, such as desks,windows, trees and flowers. So they 4. （punish）. I like the rules, because they make our school 5.　 （safety）,they make it a beautiful environment for us to study.

九年级英语单词拼写中等难度题查看答案及解析

读下面一段短文，根据上下文意思用方框内的所给词的适当形式填空。

In 1.（I）school , the rules for students are very strict, but I think they are necessary. Following the rules is everyone’s duty. They keep the students from fighting, smoking, 2. （make）noise in class and so on.

Most of the 3.　 ( student) can follow the rules. But some problem students often break the rules. They destroy public things, such as desks,windows, trees and flowers. So they　 4. （punish）. I like the rules, because they make our school 　5.　 （safety）,they make it a beautiful environment for us to study.

九年级英语其他题中等难度题查看答案及解析

—How many students are there in your school this year?

—About 800. The number has been reduced by 10 % compared with last year.

A.become less B.become smaller C.become larger

九年级英语单选题中等难度题查看答案及解析

—How many teachers are there in your school?

—About two _________.

A. hundred of          B. hundreds of  C. hundreds                D. hundred

九年级英语单项填空中等难度题查看答案及解析

— Safety Rules for teenagers require ______ strictly, especially for us junior high school students.

— Yes. Safety comes first.

A.being followed B.following C.to follow

九年级英语单选题中等难度题查看答案及解析

I am a teenager. I want to use the Internet. I know that there are rules about what I should do online. I agree to follow these rules, and my parents agree to help me follow these rules:

1. I will not call or meet anyone alone that I meet online unless my parents say it’s okay.

2. I will not buy or order anything online without my parents’ permission.

3. I will not fill in any form online that asks me for any information about myself or my family without asking my parents first.

4. If someone sends me any pictures or any e-mails using bad language, I will tell my parents.

5. If someone asks me to do something that I am not supposed to do, I will tell my parents.

6. I know that my parents want to make sure I’m safe online, and I will listen to them when they ask me not to do something.

九年级英语阅读理解中等难度题查看答案及解析