Renewable energy comes from a source that will not deplete. Two common examples of this type of energy are solar power and wind power. Geothermal power, hydropower, biomass, and tidal power are additional forms of renewable energy that produce power for our planet right now.

The primary advantage of renewable energy is that fewer potentially harmful emissions are released into the atmosphere. Although fossil fuels are used to create the products that allow for this power to be produced, most forms of renewable energy can become carbon neutral in 5 years or less.

The disadvantage of renewable energy is that it can be costly. Although wind power and solar power have become cost-competitive with coal-fired power and nuclear power in some communities, some forms are not cost-competitive globally yet when the cost per kilowatt hour is compared. In 2015, the lifetime cost per kilowatt hour of conventional coal was 9.5 cents, while the cost of offshore wind was 15.8 cents.

    The world is currently very developed, which means that science and technology are very developing,especially mobile phones..They have a lot of advantages. Because they are so useful. They work remotely, even when you're in another part of the world. You can communicate verbally, video, audio and exchange other media. All websites, applications and software have been created to help users socialize. Social media, texting, texting, laptops, tablets, and cell phones mean no one needs to feel isolated in the digital world. Users can be regularly updated with news about local events and social developments. We can also learn through technology. Anyone with access to the internet today can access a huge amount of the world's knowledge through the web. Alternatively, lessons and courses can now be offered virtually online. Online social media or playing computer and mobile games is becoming more and more popular. Traditional media also developed, as television and broadcasting were digitized along with radio. It has many benefits, but it also has disadvantages. Nowadays, there are a lot of young people who are interacting too much with internet devices, and can easily watch bad programs, programs like those are not good for them. However,mobile phones have a lot of advantages, are important parts of our life

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1. a

2. c, d

3. b, e

4. f

1. a

2. c, d

3. b, e

4. f

Nowadays almost everyone in the world have had a contact with computers. A great part of them has been using international computer’s net known as Internet.
I think using internet has more advantages then disadvantages. First of all, Internet provides access to a lot of information. Some of them are very useful in your job other helps in your hobby. Searching the net with Google, you can find everything you want. You can also do shopping using Internet. Of course it has no sense to buying a roll, but if you need something inaccessible, you will be able to buy it in Internet shop. You need only to select what you want, fill in some forms and click ok. In a few days you will get what you have ordered directly to your home, without going anywhere. You can pay with your credit card, pay postman when you get the package, or transfer money from your bank account. Nowadays almost every bigger bank offers transferring money with Internet. It is more faster then going to the bank and filling blankets. Transferring money in traditional way takes about a day, using Internet you can do this in few seconds even in Saturday and Sunday evenings. What’s more internet banks give you insurance against unauthorized transaction. Some people thinks that their money can by easily stolen by hackers. It isn’t true because the easiest way to steal your money from internet bank is breaking to your house and stealing you card of codes. Internet banks have very good protections witch make them pracally unbreakable.
Next advantage of internet is email. Internet mails get in a few seconds in their destinations. It is very important when you want to send something for example to Australia. Of course you can send not only texts. You can email whatever you want, movies, photos, songs, computer programs etc. Costs are very important advantage of emails. Sending an email is much cheaper then phoning, or sending normal letters.
Beside a lot of advantages, Internet has some disadvantages too. First of disadvantages is that people who spend too much time sitting in the front of computer can easily gets ill. Radiation emitted by computer’s screen is harmful to eyes. People who spend too much time at their homes (because they needn’t go anywhere, they can do everything using Internet) are getting weaker. Sitting a for long time is also harmful to the spine. 
Second disadvantage is that Internet can by addictive. Some people just can’t live without it. They have no real friends and when Internet is down they are getting furious.
Internet has some opponents but more and more people treats Internet telephone, or radio. They use it for fun and work, and I think at present living without internet would be quite difficult. 

What’s your favorite type of media? Why?
- My favorite type of media is i like reading novels with themes about Vietnamese history because they can help me understand all the stories of heroes who died about the country and help me understand life during the war.
Tell some advantages and disadvantages of the Internet.
+The advantage of the Internet is that it helps us find information in the fastest way and entertain after stressful studying hours.
+The downside of the Internet is that it can make children addicted and harm their health.

What do you use the Internet for? - Why do people use the Internet? 

-I use the Internet to be able to contact my distant relatives and find solutions to difficult exercises.

-People use the Internet because the Internet is a storehouse of knowledge for everything and for entertainment after school and tired work.

bỏ chữ i like giúp em nhé em ghi nhầm

rewable:wind,solar enery,hydro,nuclear,biogas...

non rewable:coal,oil,natural gas...i think people will use it more in the future

Priority is:

-Save time.

- Flexibility when shopping.

-Easily compare prices and quality of items.

- Wide variety of items.

-Buying does not cause harm.

- Avoid unpleasant distractions.

The downside is:

-You can't actually see the products you buy

. -You have to wait for delivery.

-Your purchase may be mishandled in transit.

-You may be a victim of an Online scam.

- You cannot buy perishable products.

- You have to spend a lot of time hunting for offers

In my opinion, everything has two sides. Online shopping too:

Firstly, online shopping makes it easier for both buyers and sellers, easy to exchange, convenient, no need to go far, easy, fast. And online shopping is also a popular business, to increase income, and buyers are presented with more choices.

Besides, it is equally risky. Online shopping sometimes between buyers and sellers have not yet reached an agreement. Or maybe it's just funny advertising, but when it comes to users, the quality is poor.

Advantages:

1. Save time

2. Flexibility when shopping

3. Easily compare prices and quality of items

 4. Full variety of items

 Disadvantages:

1. You have to wait for delivery

2. Your purchase may be mishandled in transit

3. You can't buy perishable products

4. Spend more time shopping online

And finally, I want to say that online shopping is very quick and convenient, but don't always focus on online shopping and forget about daily work.