题目内容：

John Allen, an American scientist, says, “The Internet is the world’s largest l1., but all the books in it are on the floor!” What he means is that the Internet is f2.of information but it can be hard to find what you really need. The Internet has another disadvantage. Not all the information on the Internet is t 3.. We must be careful to choose the right information.

H4., the Internet still has many advantages. On some w5., you can download music and films. They are usually very cheap and some are even free. On some others, you can contact with people from home and a6.and have a nice chat. And there are some great online shops too. People can buy things at a very low p7..

We shouldn’t depend on the Internet too m8.. Some people are a9.that surfing the Internet will take the place of other healthier activities. Whether you love it or  n10., the Internet are changing our lives. We should be wise and make use of it. We should be its masters instead of its slaves.