THE INTERNET IS A WONDERFUL INVENTION...MODERN LIFE.A. TO B. FOR C...

13. The Internet is a wonderful invention...modern life.

A. to B. for C. of D. on

People are very interested in robots. Some of them look like mechanical dolls

to play with. Most of them look like other machines of today's high technologv.

Choose the word or phrase among A, B, C, or D that best fits each blank

space in the following passage.

Serious research on intelligent robots began in the 1960s in several countries.

There has been a revolution in the world of newspapers. Not many years

Now we are on the fifth generation of robots. The first robots were very

(14)...newspapers were still being produced using techniques unchanged for a

expensive. They cost $500,000 when a worker could do the same work for $15

hundred years.

an hour. By the early 1970s, a robot brain, a computer, cost $300,000. Today's

robots cost from $15,000 to $150,000.

One of the advantages of robots is that they can work in situations that are

A. to be spent B. not to spend C. don't spend D. not spending