B. Write a complaint letter to the head of your school  to tell about using electricity in your class.

 In your class, many students use the electricity for lighting. What makes you worried about that is they use the electricity wastingly.  When they go to class , they turn on the lights everytime, they don’t care about the classrom light or dark. Besides , they switch the fans on although the weather is very cold. They don’t turn off the fans and the lights after using and noone use them. They sometimes forget to turn off all devices in class after schhool, so it waste the electricity too much. You thinhk that the principal ought to ask these students to turn off all the electric devices in all classrooms if not necessary and punish any classes not obey it.

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C.  Write a complaint letter to the head of your school to tell about riding bike to school  

As you know nowsadays , many students go to school by bike. It is not necessary to say if they ride their bike in the law but they always break law. Many students ride their  bike too fast and use one hand or no hands by riding. This leads to that the accidents may happen or make the other folk in danger. Some of them may be in danger, too. On the other hand, they often make a line four or five bicycles on the streets and they  always talk or eat when riding, they don’t pay attention on traffic, so it really affects to people who are on the way with them. You think the principal should remind these students in front of all students and punish them heavily.

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A. Write a complaint letter to the local authorities to tell about littering garbage around your house in your neighborhood..

These days , many people throw trash around your house in your neighborhood. You are very worried about that beacause they don’t put garbage into the garbage bins. They litter rubbish every where such as on the streets, around houses even onto all channels, streams and rivers. Moreover they also pumped the waste water directly onto the river that makes them seriously polluted and has heavy smell. Many households who live near polluted streams or chanels may catch many illness from them.  On the other hand, littering makes the sightseeings dirty and bad smell. You think the local authorities should prohibit and fine these people who always throw trasheverywhere..............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................

These days, many people begin to catch fish in the lake behind your house. What makes you worried most is they use electricity to catch fish. A lot of small fish died and floated on the water surface. Other animals such as frogs, toads, and even birds also died from electric shock waves. You think that local authorities should prohibit and fine heavily anyone catching fish in this way.

Now, write a letter to the head of the local authorities to complain about the way of catching fish in the lake behind your house. Following SCRAP format. Begin with:

mn giúp mk với ạ!!! mai mk nộp rồi, tuyệt đối ko chép trên mạng ạ

D. Write a complaint letter to the head of your authorities  to tell about singing karaoke in your neighborhood.

As you know nowsadays , many people sing karaoke  at home too much. It is not necessary to say if they sing their karaoke in normal way  but theydon’t do that. Many of them turn on the volume  too maximize. They make the sound loudly ,and sometime some of their voices are really too bad. This makes their neighbors annoyed. Moreover, some people sing all day with loud sound , even they sing until at middnight . Therefore people who live next door them don’t sleep well and their children can’t  concentrate on learning .The noise makes people not take a rest after a hard working. You think the local authorities  should prohibit and fine heavily these people who sing karaoke by this way.

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D. Write a complaint letter to the head of your authorities  to tell about singing karaoke in your neighborhood.

As you know nowsadays , many people sing karaoke  at home too much. It is not necessary to say if they sing their karaoke in normal way  but theydon’t do that. Many of them turn on the volume  too maximize. They make the sound loudly ,and sometime some of their voices are really too bad. This makes their neighbors annoyed. Moreover, some people sing all day with loud sound , even they sing until at middnight . Therefore people who live next door them don’t sleep well and their children can’t  concentrate on learning .The noise makes people not take a rest after a hard working. You think the local authorities  should prohibit and fine heavily these people who sing karaoke by this way.

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Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.

Millions of people are using cellphones today. In many places, it is actually considered unusual not to use one. In many countries, cellphones are very popular with young people. They find that the phones are more than a means of communication - having a mobile phone shows that they are cool and connected.

The explosion in mobile phone use around the world has made some health professionals worried. Some doctors are concerned that in the future many people may suffer health problems from the use of mobile phones. In England, there has been a serious debate about this issue. Mobile phone companies are worried about the negative publicity of such ideas. They say that there is no proof that mobile phones are bad for your health.

On the other hand, medical studies have shown changes in the brain cells of some people who use mobile phones. Signs of change in the tissues of the brain and head can be detected with modem scanning equipment. In one case, a traveling salesman had to retire at young age because of serious memory loss. He couldn't remember even simple tasks. He would often forget the name of his own son. This man used to talk on his mobile phone for about six hours a day, every day of his working week, for a couple of years. His family doctor blamed his mobile phone use, but his employer's doctor didn't agree. What is it that makes mobile phones potentially harmful? The answer is radiation. High-tech machines can detect very small amounts of radiation from mobile phones. Mobile phone companies agree that there is some radiation, but they say the amount is too small to worry about. As the discussion about their safety continues, it appears that it's best to use mobile phones less often. Use your regular phone if you want to talk for a long time. Use your mobile phone only when you really need it. Mobile phones can be very useful and convenient, especially in emergencies. In the future, mobile phones may have a warning label that says they are bad for your health. So for now, it's wise not to use your mobile phone too often.

According to the passage, what makes mobile phones potentially harmful is_______.

A. their radiant light

B. their power of attraction

C. their raiding power

D. their invisible rays