Question

Can animals be made to work for us? Some scientists think that one day animals may be trained to do a lot of simple jobs that are now being done by human beings. They point out that at a circus（马戏团）, for example, we may see elephants, monkeys, dogs and other animals doing a lot of things. If you watch closely, you may notice that the trainer always gives the animal something to eat as a reward. The scientists say that many different animals may be trained to do quite a few simple jobs if they know they would get a reward for doing them.

Of course, as we know, dogs can be used to guard a house as soldiers in both old and modern times. Geese have been used to give warning by making a lot of noise when an enemy comes near. But it may be possible to train animals to work in factories. In Russia, for example, pigeons, which are birds with good eyesight, are being used to watch out fault（毛病）in small steel balls. When the pigeon sees a ball which looks different from others, it touches a switch. This turns on a light to warn the workers in the factory. At the same time, a few seeds are given to the pigeon as a reward. It takes three or five weeks to train a pigeon to do this and one pigeon can inspect three thousand balls an hour.

Apes（猿）have been used in America in helping to make cars and scientists believe that these large monkeys may one day gather crops and even drive tractors on the farm.

 

44. Which of the following four words is nearest in meaning to “trained” in the passage?

A. Taught                  B. Made                   C. Rewarded              D. Forced

45. The trainer gives the animal something to eat_____.

A. when the animal wants to eat something  B. to make the animal to do something

C. before the animal does something           D. after the animal does something

46. In this passage the author tells us_____.

A. that elephants and monkeys are the cleverest animals

B. pigeon and geese are cleverer than any other animals

C. dogs are the cleverest animals in the world

D. nothing about the question: what animals are the cleverest?

47. The pigeon touched the switch when_____.

A. the light goes on                                B. it finds a fault

C. it sees the seeds                                D. it hears a noise

Answer 1

ADDB