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Solar energy is a long lasting source of energy which can be used almost anywhere. To generate solar energy, we only need solar cells and the sun! Solar cells can easily be installed on house roofs, so no new space is needed and each user can quietly generate their own energy. Compared to other renewable sources, they also possess many advantages. Wind and water power rely on turbines which are noisy, expensive and easy to break down. Solar cells are totally silent and non-polluting. As they...
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Solar energy is a long lasting source of energy which can be used almost anywhere. To generate solar energy, we only need solar cells and the sun! Solar cells can easily be installed on house roofs, so no new space is needed and each user can quietly generate their own energy. Compared to other renewable sources, they also possess many advantages. Wind and water power rely on turbines which are noisy, expensive and easy to break down. Solar cells are totally silent and non-polluting. As they have no moving parts, they require little maintenance and have a long lifetime. However, solar energy also has some disadvantages. We can only generate solar energy during daytime because the system depends on sunlight. Besides, solar cells require large area to work effectively. The main disadvantage of solar energy is that it costs about twice as much as traditional sources such as coal, oil and gas. This is because solar cells are expensive. Scientists are hoping that the costs of solar cells will reduce as more and more people see the advantages of this environmentally friendly source of energy

40. What does the word advantages in line 13 mean?

A. very bad B. resources C. benefits D. friendly

1
13 tháng 8 2021

C

1 Complete the sentences. Use one word in each gap. 1   The library is a quiet area. Please switch ____________ your mobile phones.2   Dan! I’m on the phone! Turn ____________ the music, please! It doesn’t have to be so loud!3   I need to charge my battery. Can I plug ____________ my phone at your house?4   Wait! Don’t pull ____________ the plug! I haven’t finished my essay.5   If you put ____________ the headphones, you can listen to your music in the car.6   It’s the end of the lesson, so you...
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1 Complete the sentences. Use one word in each gap. 

1   The library is a quiet area. Please switch ____________ your mobile phones.

2   Dan! I’m on the phone! Turn ____________ the music, please! It doesn’t have to be so loud!

3   I need to charge my battery. Can I plug ____________ my phone at your house?

4   Wait! Don’t pull ____________ the plug! I haven’t finished my essay.

5   If you put ____________ the headphones, you can listen to your music in the car.

6   It’s the end of the lesson, so you can put ____________ your books now.

 

2 Complete the sentences. Use the correct form of the verbs in brackets.

1   Next weekend we _______ (play) in a tournament against other schools.

2   _______________ (she / often / go) to fencing classes at the sports centre?

3   I hope _________ (move) to the city next year. The countryside is boring.

4   Lisa! ________ (you / listen) to me?

5   The department store _______________ (open) at eleven o’clock on a Sunday.

6   _______________ (you / fancy / see) that new Bond film with me on Friday? 

 

3 Match the technology below to the descriptions. There are two words you do not need.

digital radio      games console      HD TV      satellite TV      satnav      smartphone      tablet PC

1  You can use it listen to lots of stations. It tells you the name of the song that’s playing. _______

2   You can use it to receive hundreds of channels of your choice. ­­­­_______

3   It’s a small a computer that fits in your bag, but not in your pocket!  _______

4   You can use it to help you find the way when you’re driving. ________

5   You can use it to send text messages, make calls and surf the Internet. ________

 

4 Complete the sentences with the words/phrases below. There is one word/phrase you do not need.

create      deactivate      log on      post      update      upload

1    You need to _______ an account to buy things from that website.

2   Can you help me _______ my holiday photos to my web page?

3   I can’t _______ to this website. It keeps blocking my password.

4   Mum told me to _______ my social networking profiles because I was using them too much.

5   I’m going to _______ a message on my blog and see if any friends can help me organise my party.

 

5 Complete the text with the correct word from the three options.

An auction can be a great place to get a bargain / discount / reduction 1. You can find some really interesting old things for buy / offer / sale 2. You have lots of time to decide which things you want to exchange / purchase / sell 3, and then you can make bids / goods / lots 4 to buy them. Remember to bring a credit card or banknotes / receipt / wallet 5. And if you come to the auction by bike, don’t buy a grand piano!

 

6 Read the text. Are the sentences true or false?

Martin Blane is a farmer in Cornwall, in England. One summer, Martin noticed that something strange was happening on his land. He was standing on a bridge and looking at the wheat in his fields when he realised there was a strange picture in the wheat.

‘I looked and saw lots of circles in the wheat. The line of circles went across the field from the gate all the way to the end by the stream. They were very big. Other circles made a kind of picture in the wheat. I thought aliens had come from space.’

During that summer, and all through the 1970s, more strange pictures appeared in wheat fields on farms in the south of England. Nobody knew what these ‘crop circles’ were. Photographs of them appeared in all the newspapers and people thought the subject was gripping. Many thought that aliens had come to Earth and made the pictures.

But then in the 1990s two men admitted to making the crop circles. They made a plan for a picture and then they went out secretly in the night to make their picture in the fields. Some people think they were creative and the crop circles were entertaining, but their actions were illegal. The men were on land that didn’t belong to them. Farmers were angry because their crops were damaged. The two men promised to stop.

However, the crop circles are still appearing. On the Internet, you will find photographs of crop circles on farms in different countries around the world. Some people believe the two men were lying, and the crop circles are really made by aliens.

1   Martin Blane noticed that the animals in his fields were behaving strangely.   ____

2   The big circles went from one end of the field to the other.      _____

3   The media weren’t interested in the crop circles.  _____                                         

4   Everyone was angry because the men damaged farmers’ crops.   ____             

5   People disagree about who makes the crop circles.     _____

 

7 You have just bought a new MP3 player from an online shop called CheapMP3.com. Unfortunately, the MP3 player doesn't work properly. Write a formal letter of complaint.

·        Explain what you bought, and when and where you bought it.

·        Say why you are sending it back.

·        Explain the problem and give details.

Giúp mik với mụa ngừi ưiiiii! vui

 

 

0
I. Write questions for the underlined parts.1. A: ………………………………………….B: We should use biogas for cooking instead of gas.2. A: …………………………B: Solar is a renewable energy source.3. A: ………………………………………………..B: Nuclear power can’t be used popularly because it is dangerous.4. A. ……………………………..B: People use solar power for heating or cooling the house.5. A: ……………………………………B: Yaly Hydropower Plant was constructed in 1993.6. A: ………………………….B: Solar panels will be placed on the roofs of houses and buildings.7....
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I. Write questions for the underlined parts.
1. A: ………………………………………….
B: We should use biogas for cooking instead of gas.
2. A: …………………………
B: Solar is a renewable energy source.
3. A: ………………………………………………..
B: Nuclear power can’t be used popularly because it is dangerous.
4. A. ……………………………..
B: People use solar power for heating or cooling the house.
5. A: ……………………………………
B: Yaly Hydropower Plant was constructed in 1993.
6. A: ………………………….
B: Solar panels will be placed on the roofs of houses and buildings.
7. A: ………………………………………..
B: The US spent 55 billion on energy research in 2015.
8. …………………………………….
B: There are seven types of renewable energy.

1
29 tháng 6 2023

Write questions for the underlined parts.
1. A: What is the suggestion for using biogas ?
B: We should use biogas for cooking instead of gas.
2. A: What kind of energy source is solar  ?
B: Solar is a renewable energy source.
3. A: Why can't nuclear power be used popularly ?
B: Nuclear power can’t be used popularly because it is dangerous.
4. A. What do people use solar power for  ?
B: People use solar power for heating or cooling the house.
5. A: When was the Yaly Hydropower Plant constructed  ?
B: Yaly Hydropower Plant was constructed in 1993.
6. A:  What will be placed on the roofs of houses and buildings  ?
B: Solar panels will be placed on the roofs of houses and buildings.
7. A: How much did the US spend on energy research in 2015  ?
B: The US spent 55 billion on energy research in 2015.
8. A: How many types of renewable energy are there  ?
B: There are seven types of renewable energy.

30 tháng 6 2023

…4…….. No, I don’t. Does it cost a lot to install solar panels?
…7……. Don’t worry. The panels have solar betteries that can store extra solar power for later use when the
sunnn is shining.
……8… That’s great! I really wwant to reduce my carbon footprint as much as possible.
……10….. Thanks.
…..1…. Do you use solar energy at home?
……2… Really? And solar energy is green energy, isn’t it?
……6… I know. Will I have power when the sun goes down?
…5……. Yes, it does. But you can reduce your electric bill by using solar power.
…9…… By consuming green energy, you can definitely do it.
…3…... Yes, solar power is one of the cleanest sources of energy, so it can help avoid the carbon dioxide and
other air pollution emissions.

18 tháng 10 2017

* Bài 1. Hoàn thành đoạn văn với các từ sau:

* who , carry , coins , might , need , to , located , no , travels , less.

*Nowadays, you don't (1) need to be at home or at the office to use the telephone anymore. Mobile phones have (2) no wires. You can (3) carry one in your pocket or keep one in the car. A call from a mobile phone (4) travels along radio waves to stations (5) located in different places. From there, the radio signal is connected (6) to the regular phone system. With a mobile phone, any one (7)who can drive and talk can also drive and phone. This means (8)less wasted time: You don't have to look for a telephone box or use (9) coins to make a call. So remember , next time you are at the beach or riding your bicycle, there (10) might be a call for you.

18 tháng 10 2017

* Bài 1. Hoàn thành đoạn văn với các từ sau:

* who , carry , coins , might , need , to , located , no , travels , less.

*Nowadays, you don't (1)....need...... to be at home or at the office to use the telephone anymore. Mobile phones have (2).....no..... wires. You can (3)......carry.... one in your pocket or keep one in the car. A call from a mobile phone (4)....travels...... along radio waves to stations (5).....located..... in different places. From there, the radio signal is connected (6).....to..... the regular phone system. With a mobile phone, any one (7)....who...... can drive and talk can also drive and phone. This means (8)....less......wasted time: You don't have to look for a telephone box or use (9).....coins..... to make a call. So remember , next time you are at the beach or riding your bicycle, there (10)....might...... be a call for you.

Translate into Vietnamese:

Ngày nay, bạn không phải ở nhà hoặc tại văn phòng để sử dụng điện thoại nữa. Điện thoại di động có dây. Bạn có thể một trong túi của bạn hoặc giữ một trong xe. Cuộc gọi từ điện thoại di động di chuyển theo sóng vô tuyến đến các trạm đặt ở những nơi khác nhau. Từ đó, tín hiệu radio được kết nối với hệ thống điện thoại thông thường. Với điện thoại di động, bất kỳ ai có thể lái xe và nói chuyện cũng có thể lái xe và điện thoại. Điều này có nghĩa là ít lãng phí thời gian: Bạn không phải tìm kiếm một hộp điện thoại hoặc sử dụng tiền xu để thực hiện cuộc gọi. Vì vậy, hãy nhớ, lần sau khi bạn ở bãi biển hoặc đi xe đạp của bạn, có thể có một cuộc gọi cho bạn

1 tháng 7 2023

16Would you mind if I use your mobile phone?

17Do you mind carrying my luggage?

18Would you mind not using the office phone for personal calls?

19It's crucial to keep the environment clean.

20Would you mind turning down the TV, please?

1 tháng 7 2023

16. Would you mind if I used your mobile phone?
17. Do you mind carrying my luggage?
18. Would you mind not using the office phone for personal calls?
19. It's important to keep the environment clean.
20. Would you mind turning down the TV, please?

19 tháng 8 2023

Tham khảo

1. You can do a lot with mobile phones: for example you can play games and taking photos.

2. You can buy a lot of gadgets now, for instance, pencils and rulers.

3. My parents like bands such as BIGBANG and 2NE1.

4. When my grandad / grandma was young, he / she did other things like playing “ô ăn quan” and herding buffaloes.

1: for instance/for example

2: such as

3: likes

4: or example

Question II. Read the text and decide if the sentences are true (T) or false (F) A mobile phone, also known as a cell phone, is one that we can use to make telephone calls to anyone from a great distance via a radio link. Apart from telephony, modern smart mobile phones also support a number of other services including text messaging, internet access, gaming, photography, and many business applications. The first cell phone weighed about 2 kilograms and was demonstrated in 1973 by Dr.Martin...
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Question II. Read the text and decide if the sentences are true (T) or false (F)

A mobile phone, also known as a cell phone, is one that we can use to make telephone calls to anyone from a great distance via a radio link. Apart from telephony, modern smart mobile phones also support a number of other services including text messaging, internet access, gaming, photography, and many business applications.

The first cell phone weighed about 2 kilograms and was demonstrated in 1973 by Dr.Martin Cooper and John F.Mitchell of Motorola. Ten years later, in 1983, the first model of cell phone went on sale to the public. By 2011, over six billion people, 87% of the world’s population, used mobile networks.

In spite of the many advantages a cell phone has, it also brings about several problems that users should be aware of. Mobile phone radiation is believed to be harmful to human health. Some recent studies have found an association between cell phone use and certain kinds of brain disease. Another serious problem can be privacy and tracking. Once users have the phone on, they can be interrupted in many ways, and they can also be tracked by location data.

Statements

T

F

1. A cell phone is like a cordless phone that is used within a short range of a base station.

2. A cell phone can’t operate without a radio link.

3. The sound of a mobile phone may cause brain diseases.

4. A telephone user’s location may be tracked easily.

5. The main idea of the passage is to persuade people not to use cell phones.

PART D: WRITING

Question I. Rewrite the following sentences so that the second sentence means the same as the first one.

1. “ I will go to Ha Noi tomorrow.” : She said

She said ...............................................................................................................................

2. Scientists have invented new devices to help people live a longer life.

New devices ………………………………………..…………….………………………

3.I don’t have enough time , so I can’t go on holiday this summer.

If ……………………………………….……….…………………………………………

4. The rescue workers evacuated the villagers in the raged flood to the safe place last night.

The villagers in the raged flood……………………………………………………..

5. The storm destroyed many houses in this village last week.

Many houses………………………………………………………………...………..

1
10 tháng 1 2020

PART D: WRITING

Question I. Rewrite the following sentences so that the second sentence means the same as the first one.

1. “ I will go to Ha Noi tomorrow.” : She said

=>She said that she would go to Hanoi the next tomorrow

2. Scientists have invented new devices to help people live a longer life.

=>New devices have been invented (by the scientists) to help people live a longer life

3.I don’t have enough time , so I can’t go on holiday this summer.

=>If i had enough time, I could go on holiday this summer

4. The rescue workers evacuated the villagers in the raged flood to the safe place last night.

=>The villagers in the raged flood are evacuated to the safe place ( by the rescue) last night

5. The storm destroyed many houses in this village last week.

=>Many houses in this village were destroyed (by the storm) last week

7 tháng 8 2023

Special devices have already been made avaible to put on the roofs of houses and flats to (1) catch the sun's rays and the thus heat water. Thousands (2) of these devices are now being used to provide (3) energy in homes throughout the United States while more (4) than a million solar water-heating units have already been (5) built in home in Japan. Other purposes for which (6) solar energy is at present being used include the separation of salt from seawater, irrigation and sewage disposal (7) for most people in developing countries, the need is not for air-conditioners or central heating but for cheap (8) ways of cooking food, drying crops and lighting homes