单项选择题

According to Nick, what should ordinary citizens do to protect environment

A．To make laws for the government.
B．To pick up rubbish in public places.
C．To catch those who litter in public places.
D．To avoid dropping litter in public places.
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单项选择题
Which of the following about predators is NOT true
A．They are animals that kill other animals for food.
B．Predators have no place in nature"s grand design.
C．The wolf, mountain lion, fox and bear are all predators.
D．They help maintain the health of their prey species.
单项选择题
According to Nick, what should the government do to prevent pollution
A．To make laws to prevent pollution.
B．To set good examples to prevent air pollution.
C．To punish those who pollute the air.
D．To move offices to the countryside.
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