单项选择题

What is the purpose of the honeybee's dance

A．To determine the quantity of food at a site.
B．To communicate the location of food.
C．To increase the speed of travel to food sources.
D．To identify the type of nectar that is availabl

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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

单项选择题

It can be inferred from the passage that brain size is assumed to ______.

A．be an indicator of cognitive ability
B．vary among individuals within a species
C．be related to food consumption
D．correspond lo levels of activity