Interesting as dolphins (海豚) are to scientists, it is their intelligence and sociability that have caught the popular imagination. Like whales, dolphins have a strong sense of family. A dolphin family is like a human family, but much larger.
Dolphins seem to be among the most sociable of all living creatures. They enjoy playing with each other and also with the humans, with whom they come in touch. It is this characteristic that makes them so easy to train as star performers. Besides, they seem able to remember humans that they have met even when there is a long period of time between meeting.
A sense of family and a spirit of cooperation appear to be very strong among all these marine animals. There are many recorded cases of dolphins supporting a sick animal on the surface of the water so that it will be able to breathe.
Language has always been considered unique to human beings. It now seems that the cetaceans (鲸目动物) may be able to communicate with each
A. High intelligence.
B. Sociability.
C. Enjoying playing with each other and also with the humans, with whom they come in touch.
D. Being able to remember humans that they have met.
Though some people have suggested that women should return to housework in order to leave more jobs for men, the idea has been (1) by both women and men in public (2) polls.
Lately some union officials have suggested that too many women are (3) in types of work which were (4) for men and that women should step aside to make (5) for unemployed young men. They argue that women, especially women in their child--bearing years actually delay economic development and result (6) lower (7) , poor quality and inefficiency.
To solve the problem, they suggested that working women stay at home (8) their husbands or brothers were given double wages. They argue that under these (9) , families would remain their same level of income, and women could run the house and (10) children much better.
The suggestion, (11) ,has been flatly rejected by 9 out of 10 people (12) .
Some other p
A. typical
B. usual
C. normal
D. regular
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