英语小题Now machines are widely used all over the world.Why are

英语小题Now machines are widely used all over the world.Why are machines so important and
Now machines are widely used all over the world.Why are machines so important and necessary（必要的）for us,because they can help us to do things better and faster.
A washing machine helps us to wash clothes fast.A printing machine（印刷机）helps us to print a lot of books,newspapers,magazines（杂志）and many other things fast.Bikes,cars,trains and planes are all machines.They help us to travel faster than on foot.
The computer is a wonderful machine.It was invented not long ago.It not only stores（贮存）information （信息）but also stores numbers millions of times as fast as a scientist（科学家）does.Let’s study hard and
try to use all kinds of machines to build
China into a modern
country.
　　1.Machines can help us to do things better and faster,so they_________.
　　A.are difficult to make
　　B.are expensive
　　C.are important but not necessary.
　　D.are very helpful
　　2.We have to travel on foot without_________.
　　A.bikes 　　　　B.machines
　　C.planes　　　　D.trains
　　3.Computers can store information and numbers _________a scientist does.
　　A.a little faster than 　　B.as fast as
　　C.much faster than 　　D.much more slowly than
4.if we want to build China into a modern country,we must_________.
A.study hard B.try to use all kinds of machines C.invent many machines D.A,B,andC
5.primting machine can help us_________.
A.print a lot of books B.read more books C.invent many machines D.wash clothes fast

D because Machines can help us to do things better and faster,so they are very helpful
　　A 用自行车代替徒步行走
　　C 电脑存储数据比科学家快很多
再问： ���ֲ�����������һ��
再答： 　　D 根据文中最后一句话 Let’s study hard and try to use all kinds of machines to build 　　China into a modern country.可知 　　A 根据文中A printing machine helps us to print a lot of books, newspapers, magazines and many other things fast.