Unit3 Online tours首字母填空专项提优练****专项提优一 The computer and the Internet have become part of teens' life. The number of teen Internet users in China is 1. g______ bigger and bigger and has increased to 253 million.The number shows a great increase(增长)in Internet users in China over the last 2.f______ years, especially among teenagers. And China has become a large market for Internet 3.b______ A new survey shows that Chinese teens take a(n) 4.i______ in online activities. They seem not to know that spending too much time before a computer 5.s______ is bad for their health. According to the survey, 42.6% of the teens have built their 6.o______weblogs. More than half enjoy 7.c______ online with friends and 10.6% of the teens play Internet games. It is a 8. p______ that only 6% use the Internet to get information for their learning projects! Also, the survey finds that the teens have different favourite 9.p______to use the Internet. For teens in towns, 35% 10.c______ Internet cafes as main places to go online. For those living in large cities, 76% use personal computers. Too much time online certainly affects teens' health and study. It's never too late to say no to that. 专项提优二 Many of my friends have computers at home. What are the computers used for? Andy is a top student. He likes 1.s______for information on the Internet. He says the Internet always 2.p______ the lates