“庄稼一枝花，全靠肥当家”．种庄稼、养花都需要施肥，肥料为植物生长提供（  ）

    Most children like watching TV. It's very ____  . By watching TV they can see and learn a lot and know many things about ____ country and the world. Of course, they can also ____ over the radio. But they can learn better and more ____ on TV. ____  ? Because they can hear and watch at the same time. But they can't see ____ over the radio. TV helps to open children's ____ . It helps to open their minds, too. They learn newer and ____  ways of doing things. Many children watch TV only on Saturday or Sunday evening. They are always busy  ____ their lessons. But a few children watch TV every night. They go to bed very ____. They can' t have a good rest. How about you, my young friend?