题目内容：

Today’s young people are taking a more active part in online activities. Although the Internet can be     for students to collect information and communicate（交流）with their friends, teachers and parents are becoming more and more     about the unhealthy web content（网上内容）in the bar. They think that the birth of “Harm-free Internet Bars”（健康网吧）is     step to     teenagers.

It was Sunday afternoon and there were not many      seats left in the Feiyu Internet Bar. A few       were found playing     . A person of the bar was walking around       Internet users’ online activities.

“My job is to find anyone who is looking at       websites and then     them from doing so,” he said. “This is a       of the ‘Harm-free Internet Bar’ project”. Feiyu, a famous Internet bar in Beijing is among the first 19 to      the harm-free Internet bar club.

In order to help start a better     for teenagers’ online activities, China’s Communist Youth League has brought out the program named “Harm-free Internet Bar for Teens”.

But while teachers and parents     the “harm-free Internet bars”,    do many school students think of them? 

1.A. successful              B. useful          C. hopeful               D. interesting

2.A. amazed                 B. excited         C. frightened            D. worried

3.A. an easy                 B. a hard         C. an important            D. an impossible

4.A. prevent                B. stop           C. ask                            D. protect

5.A. comfortable             B. empty            C. single       D. clean

6.A. teachers               B. students        C. parents     D. officers

7.A. music             B. bridge                     C. chess               D. online games

8.A. watching                B. looking                  C. seeing              D. finding

9.A. interesting        B. healthy              C. unknown             D. harmful

10.A. stop             B. tell                 C. make        D. encourage

11.A. work                 B. program      C. room                 D. place

12.A. join             B. help                  C. open                D. keep

13.A. place                B. environment          C. Internet bar        D. club

14.A. complain about   B. worry about        C. welcome             D. club

15.A. how                   B. why              C. what                  D. whether