| Can animals be made to work for us
Some scientists think that one day animals may be trained to do a number of
simple jobs that are now done by human beings. They point out that at a circus, for example, we may see elephants, monkeys, dogs and other animals doing quite skillful things. Perhaps you have seen them on the television or in a film. If you watch closely, you may notice that the trainer always gives the animal a piece of candy or a piece of fruit as a reward. The scientists say that many different animals may be trained to do a number of simple jobs if they know they will get a reward for doing them. Of course, as we know, dogs can be used to guard a house, and soldiers in both old and modem times have used geese to give warning by making a lot of noise when a stranger or an enemy comes near. But it may be possible A. Animals are very skillful at a circus. B. They are big and strong. C. Some animals arc as clever as human beings. D. Animals can be trained because they like to get something as a reward. [填空题]He will go home after he finishes his work．
He won’t go home ______ he finishes his work．
[单项选择]
Passage One [填空题]He will go home after he finishes his work．
He won’t go home ______ he finishes his work． [填空题]What does Tom do when he can’t make up his mind
He always ______ others.
[单项选择]"Where can I find Jim " "He is ______ his work. He won’’ t leave the lab until 6:00 p. m."
A. on B. over C. at D. under [单项选择]（ ）finished his work, he had to stay at home on the weekend.
A. Having not been B. Being not C. Not having D. Having not 我来回答: 提交
最新试题
|
