网络时代最大的特点是（）单独面对计算机的事实。

Computers are useful machines. They can help people a lot in their daily life. For example, They can help people to save much time to do much work, and they can help people to work out many problems they can’t do easily. Our country asked everyone except the old people, to learn to use computers before the twenty-first century.

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

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

Will computers really bring trouble to people or can they bring people happiness? It will be decided by today’s students themselves!

小题1:Our country asked everyone to learn to use computers except the ________ .

A．young people

B．old people

C．students

D．adults小题2: Why do we say the computer is a useful machine? Because _____

A．Our country asks us to learn it.

B．it can help us to do a lot of things.

C．We can use it to play games only.

D．it can help us to find jobs only.小题3:What do many teachers and parents complain about? They complain about _____ .

A．their students and children use computers to learn well.

B．computers let them lose their jobs

C．computers make their students and children fall behind

D．computers bring people a lot of trouble小题4:In this passage we know computers _____

A．also bring us trouble

B．bring us happiness only

C．are hated by people

D．are good for people’s health小题5:How do you understand the last sentence of this passage? It means ____

A．computers are used by people

B．people can live well without computers

C．one must decide how to use computers

D．computers are strange machine

相对反义词：也称极性反义词。这类反义词在意义上互相对立，肯定甲必否定乙，肯定乙必否定甲；但是，否定甲不一定就是肯定乙，否定乙也不一定就是肯定甲。 根据上述定义，下列属于相对反义词的一组是( )。

A．生—死

B．曲—直

C．多—少

D．有—无

巨大右房见于

A．二尖瓣狭窄

B．二尖瓣关闭不全

C．房间隔缺损

D．动脉导管未闭

E．Ebstein畸形

下列不属于微型计算机的技术指标的是( )。

A．字节

B．时钟主频

C．运算速度

D．存取周期

油漆主要分为（）；（）；（）。