There are all kinds of machines. They  21  in many different ways. One kind of machine is called a computer. A computer can do many things. A computer can do math problems. People can also do math problems. But they cannot do it   22  a computer.
Computers remember things. Computers do   23  people tell them. People cannot remember as many things as computers. Computers help tell   24  the weather will   25  .Computers help fly rockets and spaceships.
These are   26  of ways computers are used. They are used in 27  ways. Some computers do just 28  things. Some computers can do a lot of things. There are  29  computers. There are big computers. There may be computers in your school. Do you   30  what they do?
.

A．use

B．are used

C．are using

D．will use

.

A．faster than

B．as fast as

C．more quickly than

D．so big as

.

A．something

B．that

C．everything

D．things

.

A．Which

B．where

C．what

D．why

. A. be like       B. be               C. look             D feel
.

A．all

B．many

C．a lot

D．only some

.

A．thousand

B．thousands

C．thousand of

D．thousands of

.

A．a little

B．little

C．few

D．a few

.

A．large

B．huge

C．good

D．small

.

A．get

B．talk

C．make

D．know