题目内容：

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.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.

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.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.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.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?

A. Think about life before television.

B. What would our life be like without TV?

C. As we know, information is of great value to our life.

D. TV changed the way that we relate to the world forever.

E. People were able to communicate better and address issues faster.

E. It could be said to have destroyed communication as much as it strengthened it.

G. But sometimes, this "exploration" is at the expense of ignoring the people closest to us.