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A mobile phone is in fact a small radio. A radio sends a person’s voice over a long way to another radio. A voice that is sent by radio is called a signal. A radio signal travels very quickly.
Only a few years ago, mobile phones were very large. They needed large batteries.
They had to be powerful to send their signal to far away places. This was because most cities had only one antenna tower for mobile phones.
Do you know what use a mobile phone has? Yes, you can use it to do a lot of things.
Call
your friends and family from almost anywhere.
Call the police immediately if there is an accident in the street.
Send or receive an e-mail.
Get information from the Internet.
Send and receive messages：Sending short messages is a popular way to use your mobile phone. Many people use short forms of words, so the messages are quick to write and read. Can you guess what these messages mean? Try reading them out. What do you hear?
RUOK CUL8R That’s EZ Will I C U B4 2moro? That’s Gr8!
91. There are about _____ ways of using a mobile phone.
A. five B. six C. seven D. eight
92. Today’s mobile phones are _____ according to the writer.
A. cheap and popular B. small but powerful C. big enough D. easy to use
93. A mobile phone uses _____ to send people’s voice and short messages.
A. radio signals B. batteries C. computers D. antenna towers
94. Which short message means “See you tomorrow!”?
A. RUOK B. CUL8R C. That’s Gr8! D. CU 2moro
95. What’s the main idea of the passage?
A. The common knowledge of the mobile phone
B. How the mobile phone will develop
C. How the mobile phone works and what use it has
D. What short forms of words mean in written messages
查看习题详情和答案>>them are not using it in a good way. Here are some rules to make sure you are safe and have fun on the
Internet.
Make rules for Internet use with your parents. For example, when you can go online, for how long and what activities you can do online.
Don't give your password (密码 ) to anyone else and never give out the following information: your
real name, home address, age, school, phone number or other personal information.
Check with your parents before giving out a credit(信用) card number.
Never send a photo of yourself to someone in e-mails unless your parents say it's OK.
Check with your parents before going into a chat(聊天) room. Different chat rooms have different
rules and attract different kinds of people. You and your parents will want to make sure it's a right place
for you.
Never agree to meet someone you met on the Intemet without your parents' permission (允许) .
Never meet anyone you met online alone.
Always remember that people online may not be who they say they are. Treat everyone online as if
they were strangers.
If something you see or read online makes you uncomfortable, leave the site. Tel] a parent or a teacher right away.
Treat other people as you'd like to be treated. Never use bad words.
Remember-not everything you read on the Internet is true.
A. send their own photos to him
B. make rules for Internet use with parents
C. believe everything they read on the Internet
D. give out their personal information
2. It's good for children to______ on theInternet.
A. give passwords to others
B. get useful knowledge and information
C. give out a credit card number
D. go into a chat room as they'd like to
3. What shouldn't be done when you are online?
A. Using bad words.
B. Sending messages and e-mails.
C. Leaving the site if you feel uncomfortable.
D. Treating everyone online as strangers.
4. If your parents don't agree, never______ .
A. read anything on the Internet
B. relax in your free time
C. have a face-to-face meeting with anyone you met online
D. treat other people as you'd like to be treated______.
5. The best title for this passage is .
A. How to Use Computers
B. Surfing on the Internet
C. Information on the Internet
D. Internet Safety Rules
1. A. use B. decide C. collect D. provide
2. A. a few B. many C. several D. some
3. A. new B. short C. interesting D. serious
4. A. program B. chance C. problem D. business
5. A. knowledge B. information C. messages D. words
6. A. a different B. a usual C. the same D. the best
7. A. in newspapers B. in books C. in magazines D. on television
8. A. what for B. what else C. why not D. how long
9. A. necessary B. unusual C. ordinary D. enjoyable
10. A. danger B. science C. life D. disease
11. A. good news B. pleasant stories C. bad news D. true stories
12. A. difficulty B. suddenly C. luckily D. safely
查看习题详情和答案>>
Many children use the Internet to get useful knowledge and information，and to relax in their free time．But some of them are not using it in a good way．Here are some rules to make sure you are safe and have fun on the Internet．
| Dos | Don’ts |
| Make rules for Internet use you're your parents．For example，when you can go online，for how long and what activities you can do Online． | Don't give your password（密码）to anyone else，and never give out the following information--your real name，home address， age，school，phone number or other personal information． |
| Check with your parents before giving out a credit card（信用卡）number． | Never send a photo of yourself to anyone in email unless your parents say it's OK． |
| Check with your parents before going into a chat room．Different chat rooms have different rules and attract different kinds of people．Make sure it's a right place for you to stay． | Never agree to meet anyone you met on the Internet without your parents' permission． |
| Always remember that people online may not be who they say they are．Remember--not everything you read on the Internet is true． | Treat other people as you'd like to be treated．”Never use bad words． |
| If something you see or read on line makes you uncomfortable，leave the web site（网页）．Tell your parent or teacher right away． | Never surf the Internet too long．It’s bad for your eyes． |
1．The writer tells children to ________．
A．send their photos to him
B．believe everything they read on the Internet
C．make rules for Internet use with parents
2．It’s good for children to ________ on the Internet．
A．give password to others B．get useful knowledge and information
C．give out a credit card number
3．What shouldn't be done when you are online?
A．Using bad words． B．Sending messages and e-mails．
C．Leaving the web site if，you feel uncomfortable．
4．If your parents don't agree，never ________．
A．check with your parents before going into a chat room
B．relax in your free time
C．have a face-to-face meeting with anyone you met on the Internet
5．The best title for this passage is “________”．
A．Internet Safety Rules B．Surfing the Internet
C．Information on the Internet
查看习题详情和答案>>A mobile phone
（手机）is in fact a small radio. A radio sends a person's voice over a long way to another radio. A voice that is sent by radio is called a signal（信号）. A radio signal travels very quickly.
Only a few years ago, mobile phones were very large. They needed large batteries
（电池）. They had to be powerful（功率高）to send their signal to faraway places. This was because most cities had only one antenna tower（中继站）for mobile phones.Today's mobile phones are small and easy to use. Now most cities have a lot of antenna towers, not just one. This means that each mobile phone doesn't have to send its signal far away, so they don't need to be so powerful. Mobile phones today use small batteries. A large city, where lots of mobile phones are used, can have hundreds of towers.
Do you know what use a mobile phone has? Yes, you can use it to do a lot of things.
Call your friends and family from almost anywhere.
Call the police immediately if there is an accident in the street.
Send or receive e-mail.
Get information from the Internet.
Send and receive messages.
Sending short written messages is a popular way to use your mobile phone. Many people use short forms of words, so the messages are quick to write and read. Can you guess what these messages mean? Try reading them out. What do you hear?
RUOK?
CUL8R!
That's EZ !
Will I CU B4 2moro?
That's Gr8!
(1
）The writer talks about ________ uses of a mobile phone.[ ]
|
A ．three |
B ．five |
C ．seven |
D ．nine |
(2
）What does the writer think of today's mobile phones?[ ]
A
．They are small but very powerful.B
．They are very popular and cheap.C
．They are very easy for us to use.D
．They are big enough to send a signal.(3
）What does the writer write the article（文章）for?[ ]
A
．To give us some common knowledge of the mobile phone..B
．To introduce how the mobile phone works and what use it has.C
．To tell us what short forms of words mean in written messages.D
．To show us in what way the mobile phone is expected to develop. 查看习题详情和答案>>