The computer is a useful machine．It can help people a lot in their daily life．For example， it can help people to save much time to do much work，and it can help people to work out complicated（复杂的）problems that people can't do easily．What's more，it makes it more convenient（方便）to send and receive messages．In the new century，it seems that it's very necessary for everyone to learn how to use computers， even for the old people．The computer is really an important tool in modern life．

Today more and more families have computers．Parents buy computers for their children．They hope computers can help their children improve their studies at school．Yet， many of their children use computers to play games，to watch videos，or sing karaoke，instead of studying．So，many teachers and parents complain that computers cannot help children to study but instead make them fall behind．Because of this，computers are locked in boxes by parents．

In some other countries，even some scientists hate computers．They say computers cause millions of people to lose their jobs or cause them a lot of trouble．

Who knows what the computers of tomorrow will be like？Will they really make life better，or will they bring trouble to people？The students today will have to decide how to use the computers of tomorrow．

根据短文内容，回答下列问题。

【1】Why does the writer say the computer is a useful machine？

The writer says this because ______________________ ．

【2】Why do the parents buy their children computers？

They think computers __________________________________ ．

【3】What do some teachers and parents complain about？

They complain that ____________________________ ．

【4】Do computers only make our life better？

No, they _______________________ ．

【5】Can computers really help children to study？ __________________ ．