Today more and more advertisements are seen on the TV screen. It's difficult to find a program without insertion of ads on TV. Food, clothes -- everything you can think of --are presented on television. Occasionally, we can also see some public welfare ads, appealing to people to respect the old or to protect the environment. In general, there are two main reasons leading to the prevalence of commercials on TV. As far as I am concerned, I am in favor of TV ads because some of them are interesting and informative. But there is no denying that some of them are tedious and not trustworthy. Therefore, I think it is really high time that the TV stations strengthened the control of advertisements and made them more attractive.