英语阅读理解Man has many interesting inventions（发明） since the begi

英语阅读理解
Man has many interesting inventions（发明） since the beginning of time.Some of this inventions like numbers,words and radios have certainly changed history.
One of the most important invention is the computer.It has change all our lives.
People built the first computer in Harvard University(哈佛大学) in 1944.It was as large as a room and quite difficult and slow to operate（操作）.But since the invention of the silicon chip（硅片）,computer has become smaller,easier to use,and faster to operate.Some computers are as small as TV sets.People can make computer smaller than a book.And computers are getting smaller all the time.
Why is the computer useful to us?First it can keep a lot of news and messages.Second,the computer can operate very fast--- thousands of times faster than a man,and it will not be tired.Third,people can build computers into other kinds of machines,like radios,cars and planes.Computers can do a lot of work for us.
Soon,almost everyone will use some kinds of computers.This invention will change the lives of all of us.
56.The first computer was ____________.
A.as large as a big box B.not so large as a room
C.as large as a room D.larger than a room
57.How long is the history of computers?
A.forty-four years B.forty-five years
C.fifty years D.more than sixty years
58.The computer has become smaller and easier to use because of the invention of ________.
A.many kinds of machines B.the silicon chip
C.numbers and words D.cars and radios
59.The computer is useful because _________.
A.it is getting small all the time
B.it can keep lots of messages and news
C.it can operate very fast and people can build it into other machines
D.both B and C
60.The main idea of this passage is that ______.
A.the computer will change our lives
B.the computer will operate faster
C.numbers,radios and words are important
D.the computer will become smaller soon