Nov 21 is United Nations' World Television Day. While many of us today take the television for granted, it's actually one of the greatest inventions of the 20th century.【小题1】And it has been increasingly popular since its introduction. By 2021, there will be 1. 7 billion homes around the world that contain TV sets.

【小题2】We mostly had to rely on the radio or newspapers to know what was going on in the world. But after television arrived, the world seemed a lot smaller. It brought information night to our home.【小题3】Also, they became aware of things happening around the world just by watching the news.

But there is undoubtedly a bad side to TV.【小题4】In the days before television, a typical family would have played games or just chatted with each other after their evening meal. But since then, sitting around the TV in sil ence has become a regular evening activity.

Still, the United Nations says that TV "continually invites people to explore beyond their living rooms," and that is undoubtedly true.【小题5】.

While television is indeed a brilliant tool, let's not forget about the people sitting next to us on the couch. After all, what good is watching something interesting if you don't want to share your opinions on it?