单项选择题

How did Andrew Whiten and his colleagues study the chimpanzees' behaviour

A．Through training chimps.
B．Through comparing three groups of chimps.
C．Through trapping.
D．Through controlling three groups of chimps.
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单项选择题
In the control group, chimpanzees ______.
A．learned to use poking
B．learned to use lifting
C．learned to use neither poking nor lifting
D．stuck to poking or lilting
单项选择题
Which of the following is NOT the proper way to teach children to be caring
A．Get them involved in the voluntary work in a community.
B．Be kind to others and to the child.
C．Have them join people in small acts of kindness.
D．Ask them to do as you say..
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