what a useful app作文 案例一： With the development of science and technology, the Internet is becoming more and more popular in people's life. There are many applications for surfing the Internet, and the most useful one is its convenience. For example, someone can work on the Internet at home instead of going to the company. In addition, people can read the latest news, send e-mail, watch movies and shop online. They don't have to waste too much time and energy from one place to another. However, every coin has two sides, and the Internet is no exception. Too long online time is harmful to health. Some students even stay together all night playing computer s, as a rest, they may Sleeping in class, therefore, we students should not be addicted to the Internet, and never forget our responsibility. We should be very careful when surfing the Internet. 案例二： Note: for this part, you can write a composition for a few minutes on the Internet. You should write at least a few words and write your composition on the following outline: on the one hand, no one denies that the Internet is one of the most useful media in our college students' daily life. I go online every day to exchange information with netizens through email, but on the other hand, many people admit that they are too addicted In order to maintain a regular and healthy lifestyle, it is necessary for us to make rational use of the Internet and restrain excessive indulgence after the invention of the Internet, so as to enrich our life and improve our work efficiency, rather than shackle us with chains. 本文来源：https://www.wddqw.com/doc/2726d41fa6e9856a561252d380eb6294dd882200.html