阅读下面短文，补充所缺信息。并把所填单词填写在答题卡上指定的位置。每个空只能够填写一个形式正确、意义相符的单词.
Connect to the world
Over the past 20 years, the Internet has greatly influenced our world and 71 our lives. The Internet makes it much 72 for people to search for information. For 73 , when we write a history report, we don’t have to go to the library. We can find 74 about world leaders and historical events on different websites. Everything we want to know can 75 found at the click of a button.
The Internet helps us to stay connected to family, friends and the world around us. Not long ago, we wrote letters and waited weeks for a reply. Today, when we use QQ, we send and receive messages across thousands of miles in a 76 seconds.
Although the Internet has made our world better in many ways, in some 77 it can be a bad influence. There is a lot of false information on the Internet. It is important not to believe 78 we read on the Internet.
Some teenagers spend too much time 79 Internet games. They may lose focus on their studies.
There are millions of interesting sites to visit and so many wonderful things to do online. How could we live without the Internet nowadays? But try to let the Internet be your 80 servant, not your bad master!