The readiness of the rats to befriend the social robot was surprising given its minimal design. The robot was the same size as a regular rat but resembled a simple plastic box on wheels.“We' d assumed we' d have to give it a moving head and tail, facial features, and put a scene on it to make it smell like a real rat, but that wasn’t necessary, ”says Janet Wiles at the University of Queensland in Australia, who helped with the research.
The finding shows how sensitive rats are to social cues, even when they come from basic robots. Similarly, children tend to treat robots as if they are fellow beings, even when they display only simple social signals.“ We humans seem to be fascinated by robots, and it turns out other animals are too,”says Wiles.
21. Quin and her colleagues conducted a test to see if rats can________
[A] pickup social signals from non-living rats
[B] distinguish a friendly rat from a hostile one
[C] attain sociable traits through special training
[D] send out warning messages to their fellow
22. What did the social robot do during the experiment?
[A] It followed the social robot.
[B]It played with some toys.
[C] It set the trapped rats free.
[D]It moved around alone.
23. According to Quinn, the rats released the social robot because they________
[A] tried to practice a means of escape
[B] expected it to do the same in return
[C] wanted to display their intelligence
[D]considered that an interesting game
24. James Wiles notes that rats________
[A]can remember other rat's facial features
[B] differentiate smells better than sizes
[C] respond more to cations than to looks
[D]can be scared by a plastic box on wheels
25. It can be learned from the text that rats________
[A]appear to be adaptable to new surroundings
[B] are more socially active than other animals
C] behave differently from children in socializing
[D]are more sensitive to social cues than expected
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