Dogswillrefusefoodofferedbypeoplewhohaverefusedtohelpth...

问题详情：

Dogs will refuse food offered by people who have refused to help their owners, some researchers said last Friday. The study led by the researchers showed that dogs have the ability to co-operate(合作) socially- an ability found in a small number of species, including humans and some other primates(灵长类动物).

The researchers tested three groups of 18 dogs using role plays in which their owners needed to open a box. In all three groups, the owner was with two people whom the dog did not know. In the first group, the owner tried to get assistance from one of the other people who actively refused to help. In the second group, the owner asked for, and received, help from one person. In both groups, the third person neutral (中立的). They neither helped nor refused to help. Neither person interacted with the owners in the third group.

After watching the box-opening scene, the dog was offered food by the two unfamiliar people in the room. Dogs that saw their owner being refused would choose food from the neutral person and ignore the offer from the person who had refused to help their owner. Dogs whose owner was helped and dogs whose owner did not interact with either person showed no preference (偏爱) for accepting food from the strangers.

The ability is present in children from the age of about three. And this study showed that dogs share this ability with humans. “Interestingly,” said one of the researchers, “there is a similar study that showed tufted capuchins (a kind of monkey native to South America) have this ability, but there is no evidence (根据) that chimpanzees（黑猩猩） show a preference.”

32. What does the underlined word “assistance” in Para.2 mean?

  A. Praise     B. Advice  C. Attention   D. Help

33. During the study, dogs in the second group would_____.

A. refuse food from both strangers  

B. accept food from both strangers

C. only refuse food from the neutral person 

D. only accept food from the person kind to their owner

34. What the researcher said in the last paragraph shows that ______.

A. not all primates have the same ability as humans

B. primates have the same ability as humans 

C. primates have a lot in common with humans

D. chimpanzees aren’t as clever as tufted capuchins

35. What can be used as the best title of the passage?

  A. Dogs can know how their owners feel

B. Dogs are mean to those who are mean

C. Dogs can recognize friends and enemies.

D. Dogs ignore those who are unkind to their owners.

【回答】

DBAD

知识点：阅读理解

题型：阅读理解