单项选择题

A．Every 2 years.
B．Whenever one dies or must resign.
C．Every 6 years.
D．Every 4 years like the president.
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单项选择题
A．By forcing them farming.B．By affecting the quality of soils.C．By adding chemicals and pollute the waterways.D．By affecting the environments they live in.
A．By forcing them farming.
B．By affecting the quality of soils.
C．By adding chemicals and pollute the waterways.
D．By affecting the environments they live in.
单项选择题
Which of the following is the best title for the passage
A．African Elephants and the Ivory Trade.
B．A Bid to Save the Elephant.
C．The Poachers.
D．Elephants in Danger.
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