Refer:

Advantages of Science and Technology

The vast improvements made in the field of medicine have served to lengthen our life expectancy and to reduce the rate of infant mortality. The discovery of mechanization, better seeds, better techniques of irrigation and pest control, has worked to increase productivity levels on farms. In transportation, railway, modern ocean liner, jet plane, and motor vehicle have made our lives more comfortable and provided great possibilities for modern commercial development and industrialization. The invention of the computer has assisted the process of calculation in laboratories Technology has made communication much simpler in recent times. Science has brought about groundbreaking solutions to numerous deadly diseases. Man is able to explore the space extensively because of the wide-scale development in technology. Our life has become healthier and longer. Modern hygiene, sanitation, medicine and surgery are conquering more and more physical and mental ills day by day. We now know and experience the joys of good health and longevity. Disadvantages of Science and TechnologyMachines have led to unemployment. They have polluted water and atmosphere. They have caused noise pollution. Factories have led to slums where human beings live in squalor. Our moral and spiritual progress has failed to keep pace with our scientific progress. We have allowed science to master us instead of using it as our servant. Machines make us mechanical, deaden our sensibilities, stifle our creative talents, force mechanical regularity, uniformity and boredom upon us, increase our wants and desires, and tend to make us selfish, greedy and cruel. Geographical distance has, no doubt, vanished, but the gulf between the minds and hearts of man has widened. Machines have given man leisure, but man misuses it to get cheap and vulgar entertainment which destroys his physical and mental health.Again, science has put in our hand’s such fiendish weapons as a nuclear bomb, the guided missile and means of chemical and biological warfare. 

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1.Advantages of using the computer:

+)It  allows us to access the wealth of information that is available on the internet: The ability to research something or ask questions in real time is amazing.  Students can easily find information related to their lecture with the computer, they are active to grasp the main point of the lecture before going to school.

+) Another advantage of using the computer is their time saving nature.  The connection to the internet is of great use. .  It is much quicker to type a letter than to write one with a pen. People around the world can connect easily,free with the internet.

+)One of the root advantage of computer is accuracy. The computer can solve many calculations speedily and accurately which many people sometimes have difficulty in solving them.

2.Disadvantages of using the computer

+)Using the computer too much has bad effects on healthy. People are prone to healthy problems such as short-sighted ness,metal diseases,..

+)In addition, there are a lot of viruses which can influence a computer and destroy the data bank. It is a problem for banks and big concerns which store many of information inside their computers.

REFER

*Advantages of computers in schools

This handheld device allows students to solve complex problems quickly and efficiently. In addition, it can reduce problems for simple tasks and allow students to spend more time in understanding the problem. Second, they are saved from monotonous calculations and the same boring process

*Disadvantages of computers

The picture is actually very different from what we discussed above. The advantages are not attractive and sometimes difficult situations can lower a student's confidence.

In the beginning, the brand might be the best on the market, but it's still a device. Power and efficiency are completely dependent on the capabilities of the operator. Students must know the instructions given in the manual. For example, the computer casio fx 570vn plus is very popular with students.

Calculators are available in many brands and each brand and model requires a specific set of instructions. It's a proven fact that many of us don't bother to read the manual, and it gets lost. Although the instructions are very simple, there are chances that students can make mistakes. One small mistake is enough to incorrect the answer. The student must be able to estimate the correct answer or the student will not recheck the problem

    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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topic1

1.Walk or ride your bike whenever possible. One of the best things you can do to help stop pollution is to stop using your car for short trips. If the weather is nice and you don’t have too far to go, consider walking or riding your bike. You will help reduce air pollution and you will get some exercise and fresh air in the process

2.Use public transportation. Riding the bus, train, or subway is another great way to avoid using your personal vehicle and reduce carbon emissions. If you have access to good public transportation where you live, take advantage of it. Since you won’t have to worry about keeping your eyes on the road, you can take advantage of the time to read, catch up on news, or just relax.

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.

1. They are convenient.

It’s great being able to call a friend when you are out and about – without being tied to a land line.

2. They can be life savers.

Taking a mobile phone with you when you go hiking is a basic safety precaution. If you lose your way or get stuck in bad weather, your mobile phone could just save your life.

1. Dependency

It is easier than you might think to become addicted to your mobile phone, and so dependent on it that you forget to communicate in real life.

. Isolation

It’s ironic, but some people feel that the cellphone (which is designed to keep people connected) can actually drive us further apart. Have you ever seen a group of friends at a restaurant, looking down at their phones instead of each other? That.

6. Security issues

If someone taps in to your data they could steal your identity, pilfer your photos, and erase your contacts list.

Topic 3:

As we know, The Internet has many benefits and importance in the present time. It’s clear
that the Internet has become part of our daily life. Because:

Firstly,The Internet is a very fast and convinient way for us to communicate with others. Such
as, We can communicate with our friends and relatives by means of email or chatting.

Secondly, the Internet is a very fast and convinient way for us to get information. For
examples,We can get latest news of the world, check weather or book the tickets for a soccer
match or the flight, and so on.

Thirdly, The Internet is a big source of entertaiment: We can see movies, listen to music , read
newspapers . We can play games or do sight seeing, and so on.

Finally, Internet is a rich source educational materials: We can learn English, look up new
words in a dictionary, take a learning course, and so on.

On the other hand, the Internet has limistations. It is time - consuming and costly. It is also
dangerous because of virus and bad programs. On the other hand, The Internet users sometimes
have to suffer various risks such as spam or electronic junk mail, and personal information
leaking.
In conclusion, the Internet is very useful for us. However, we shouldn’t spend too much time
for it. We should balance study and surf the web.