单项选择题
How do some countries protect elephants from being hunted
A．By persuading ivory hunters.
B．By trying to take more care of elephants.
C．By establishing elephant preserves.
D．By fighting with ivory hunters.
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单项选择题
this in paragraph 4 probably refers to ______
A．The tusks of male elephants are usually large and heavy.
B．Tusks in good condition are in great demand, and may sell for as high as two thousand dollars or more.
C．Elephants are perhaps the only animals that are hunted for their teeth.
D．An elephant uses its long, pointed tusks as tools for digging in the ground for food.
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单项选择题
The main idea of the passage is ______.
A．to introduce something about girl smokers in Europe
B．to report something interesting happened in England
C．to describe the present condition of European smokers
D．to ware young people around the world against smoking
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