自考考试

【单选题】Passage FourWe all know that people sometimes change their behavior when someone is looking their way. Now, a new study reported online onApril 2nd inCurrentBiology shows that jackdaws —birds related to crows with eyes that appear similar to human eyes — can do the same.“Jackdaws seem to recognize the eye’s role in visual perception, or at the very least they are extremely sensitive to the way that human eyes are oriented,” saidAuguste vonBayern, formerly of the University ofCambridge and now at the University of Oxfor
D、When presented with a preferred food, hand-raised jackdaws took significantly longer to retrieve the reward when a person was directing his eyes towards the food than when he was looking away, according to the research team led by NathanEmery of the University ofCambridge. The birds hesitated only when the person in question was unfamiliar and thus potentially threatening.In addition, the birds were able to interpret human communicative gestures, such as gaze alternation and pointing to help them find hidden food, they foun
D、The birds were unsuccessful in using static cues, including eye gaze or head orientation, in that context.Unlike most birds, jackdaws’ eyes have a dark pupil surrounded by a silvery white iris. The researchers said they believe jackdaws are probably sensitive to human eyes because, as in humans, eyes are an important means of communication for them. The hand-raised birds examined in the study may be even better than wild jackdaws at attending to human gaze and responding to the gestures of the people who have raised them.The findings are particularly notable given that most other species investigated so far, including our closest relatives the chimpanzee and “man’s best friend,” the dog, are not particularly sensitive to eye orientation and eye gaze, vonBayern sai
D、Rather, she continued, chimps and dogs seem to rely on other cues such as head or body orientation in determining the looking direction of others and do not appear to appreciate the eyes as the visual organs. The results suggest that birds may deserve more respect for their mental abilities.Questions 16-20 are based on Passage Four. According to the report, when does a hand-raised jackdaw hesitate to take a preferred food
A、When the feeder is looking away from the foo
D、

B、When the feeder is unfamiliar to the bir
D、
C．When the. feeder holds the food in his han
D、

D、When the feeder is looking at the foo
D、

网考网参考答案：B
网考网解析：
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