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John Allen, an American scientist once said, “ the Internet is the world’s largest library, but all the  66  (书 ) in it are on the floor!” What he meant is that the Internet is full of 67    (信息) . But it can be difficult to find what you really need . The Internet has  _68_ (另一个) disadvantage anyone can  _69_ （创建）a website,so you can find websites about what ever you can imagine. Unfortunately, a lot of what is written on them is not always true.

 At the same time, the Internet provides many other things .On some websites, you can download music and films . They are usually very _70_ (便宜) and some are even free. On some other websites, you can connect with people from all over the world . And there are some great online  _71 （商店），too. For example，on eBay people  _72_ (卖）,used clothes, CDs, and even cars at very low prices .

 It is true that the Internet has changed the way we work and _73_ (交流). But we should not depend on it too much . Some people are also afraid that 74      (网上冲浪）the Internet has taken the place of other healthier activities, especially for _75_ (年轻的) people . Whether you love it or hate it, though, you’d better get used to it because it is right here to stay .