单项选择题

Scientists concluded from the experiment with chimpanzees and chocolate chips that chimpanzees ______.

A．lack abilities that other primates have
B．prefer to work in pairs or groups
C．exhibit behavior that indicates certain mathematic ability
D．have difficulty selecting when given choices

<上一题目录下一题>

热门试题

单项选择题

Which of the following is NOT discussed as an ability animals are thought to have

A．Selecting among choices.
B．Anticipating events to come.
C．Remembering past experiences.
D．Communicating emotions.

单项选择题

Why is the question of how easily people can get used to working at night not a mere academic question

A．Because few people like to reverse the cycle of sleep and wakefulness.
B．Because sleep normally coincides with the hours of darkness.
C．Because people are required to work at night in some fields of industry.
D．Because shift work in industry requires people to change their sleeping habits.