Read the following passage and choose the most suitable sentence from A-G for eachblank. There are two extra sentences which you do not need. 

A. Some even criticize that man's life has been controlled by computers. 

B. Later, they learned to use their fingers in counting. 

C. They have much better memories and can store large amounts of information. 

D. How quickly people will adapt to computer-based world is uncertain. 

E. For instance, a spaceship cannot leave the earth and go to the moon without computers. 

F. Since its invention the computer has changed greatly, and it has more and more uses. 

G. They can control machines in factories, work out tomorrows weather, and even do translationwork. 

How did the early people do their counting? At first,they did all their counting with smallstones. 36____________________ Since man has ten fingers,the number ten became the foundation of allcounting in many parts of the world. 

In 1946 the first electronic computers went into operation. 37____________________ It can freepeople from difficult measurement and computation; 

There are complex computation in science and engineering.Scientists are unable to makethem,but the computer can do them quickly and correctly. 38____________________ What must thespaceship be like? When can it leave? Will it be on the right course? The computer must answer allthese questions. 

In recent years more and more people have used computers not only in production andtechnology,but also in everyday life,for the simple reason that they are far more efficient than man.39____________________ No man can do 500,000 sums in one second,but a computer cam,In fact,computers cando many of the things we do,but faster and better. 40____________________ 

 36____________________