作业帮Now machines are widely used all over the world.Why are mach
来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/05/15 19:55:34
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.
Now 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 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（储存）information（信息）but also stores numbers millions of times as fast as a scientist does.Let’s study hard and try to use all kinds of machines to build China into a modern country.
65.Machines can help us to do things better and faster,so they ____A.are difficult to make B.are expensiveC.are important but not necessary D.are very helpful
66.We have to travel on foot without ____A.bikes B.machines C.planes D.trains
67.Computers can store information and numbers _____a scientist does.A.a little faster than B.as fast asC.much faster than D.much more slowly than
Now 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 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（储存）information（信息）but also stores numbers millions of times as fast as a scientist does.Let’s study hard and try to use all kinds of machines to build China into a modern country.
65.Machines can help us to do things better and faster,so they ____A.are difficult to make B.are expensiveC.are important but not necessary D.are very helpful
66.We have to travel on foot without ____A.bikes B.machines C.planes D.trains
67.Computers can store information and numbers _____a scientist does.A.a little faster than B.as fast asC.much faster than D.much more slowly than
答案是DBB
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