单项选择题


A．give rise to
B．hold back
C．attribute to
D．cut down
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单项选择题
Why does the Australia government allow the importation of the elephants
A．As a part of conservation program.
B．To safeguard the nearing extinct species.
C．To attract more tourists.
D．Under the pressure of the public.
单项选择题
What can we know about the elephants in zoos
A．They generally breed well.
B．They may not suffer health problems.
C．They may die relatively young.
D．They are cleverer than the wild elephants.
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