单项选择题

The organization of the ants has the effect of______.

A．getting the most work done
B．dividing the work up systematically
C．each ant helping with all the tasks
D．each ant doing what it can do best
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单项选择题
What's the policeman's biggest headache
A．He has to get the most desirable results without breaking the law in any way.
B．He has to justify his arrests while unable to provide sufficient evidence in most cases.
C．He can hardly find enough time to learn criminal law while burdened with numerous criminal cases.
D．He has to provide the best possible public service at the least possible expense.
单项选择题
In which way are the ants different from other non-human societies
A．They do not need to search for food.
B．They do not need to look for shelter.
C．Individuals vary in social status.
D．Individuals perform different functions.
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