By using less energy, you can reduce pollution that causes global （全球的） warming, An energy-saving light bulb （燈泡） uses less energy to produce the same amount of light as a regular bulb, Use the chart to compare a regular bulb with an energy-saving bulb．

	Regular Light Bulb	Energy-Saving Light Bulb
Name	Incandescent light bulb	Compact fluorescent light bulb（CFL），energy saver
Price	50 cents	$5
Cost of energy	Used in one year （4 hours a day）：$9.3	Used in one year（4 hours a day）：$2.5
Energy used	75 watts（Most of this energy is wasted as heat．）	20 watts
Lifetime	1.000 hours	10,000 hours

（   ） 1．How much more energy does the regular bulb use than the CFL bulb if they are used for a year （four hours every day）?

A．75 watts.          B．55 watts.          C．20 watts.                D．50 watts.

（   ） 2．How many regular bulbs does a CFL bulb equal （等同于） in lifetime?

A．1               B．5.                C．10.               D．20.

（   ） 3．I bought a regular bulb and Tom bought a CFL bulb．If we both used the bulb for four hours a day, how much money would Tom save in all after a year?

A．$ 2.3.             B．$ 90.5.            C．$ 6.8.             D．$ 95.5.

（   ） 4．Why do regular light bulbs use so much energy?

      A．They make more light than CFL bulbs.

      B．They can be used for a longer time than CFL bulbs.

C．They waste most of their energy as heat.

D．It's because of their shapes.

（   ） 5．What does the writer try to tell us according to the passage?

A．Using more energy can produce less pollution.

      B．Energy-saving light bulbs are cheaper than regular ones in shops.

      C．It is a good idea to use energy-saving CFL bulbs instead of regular ones.

D．An energy-saving light bulb is easier to get broken.

Radio，telephone and television are widely used in the world．When you  1  the radio，you can listen．But when you use the telephone，not only can you listen to others，  2  you can talk with them; however，you  3  see anything at all．Television is much better than  4  of them．People can watch TV and listen to it．But they can’t take part in（參加）  5  they see．

    Today some people are using a kind of telephone called the picture phone．

      6  it two people who are talking can see each other．

    Picture phone can be very  7  when you have something to show the person you are calling．They may have other uses in the future. Some day you may be able to  8  a library and ask to read a book right over your picture phone．You may also be able to go shopping through it，too．When you  9  something in the newspaper that you think you want to buy，you may go to your picture phone and call the shop．The shop assistant will show you the thing that you’re  10 in right over the phone．You’ll be able to shop all over the town and never leave your home．

（    ）1．A．turn to       B．turn over        C．turn off               D．turn on

（    ）2．A．a(chǎn)nd                B．not               C．so                       D．hut also

（    ）3．A．can                B．can’t            C．need                    D．needn’t

（    ）4．A．a(chǎn)ll                  B．none             C．both                    D．every

（    ）5．A．what              B．how             C．why                    D．where

（    ）6．A．With              B．In                 C．By                       D．Without

（    ）7．A．use                B．uses             C．used                    D．useful

（    ）8．A．go to              B．sit in          C．ring up         D．I make phone calls

（    ）9．A．will see           B．see               C．won’t see               D．doesn’t see

（    ）10．A．interest         B．interested      C．interesting            D．interests

 

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 (鈴聲). It tells you that someone is calling you. Now，there is a ringtone called “mosquitotone (蚊子鈴聲)”. 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 (頻率). 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

 

This dictionary tells you about English words and how to use them in reading, writing and speaking English. It not only gives the meaning of words, it can also help you with spelling, word building, grammar and pronunciation.
To use your dictionary correctly, you need to understand how the dictionary works. At the front of the book, you will find some exercises to help you make the most use of your dictionary.
If you look up the word “colour”, you will find two spellings for this word. “Colour” is used in British English, while “color” is used in American English. When such a thing happens, the dictionary shows it with the word “BrE” for British English and “AmE” for American English.
The dictionary also helps you pronounce words correctly. It uses a special alphabet (特殊字母表) to show pronunciation. If you turn to the inside back face, you will see all the phonetic letters (音標(biāo)) with some words to show you how they are pronounced. Just have a look at this page when you’re not sure how to say a word.
The most important reason for using a dictionary is to find out the meaning of a word—its DEFINITION.
In this dictionary, the definitions have been written using only 2000 words. This means that the definitions of even the most difficult words are simply explained and easy to understand.
【小題1】 According to the passage, “neighbor” is used in ______ English.

A．Australian	B．Canadian
C．American	D．British

【小題2】 In Paragraph 5, what does the underlined word “definition” mean?

A．詞性

B．詞條

C．詞庫

D．詞義

【小題3】 The dictionary explains ______. 

A．some of the difficult words	B．a(chǎn)ll the words in a simple way
C．a(chǎn)ll the easy words	D．the words of two meanings