单项选择题

A．Many species have moved further north.
B．Many species have come into existence.
C．Many species have developed a habit of migration.
D．Many species have become less sensitive to climate.
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单项选择题
A．Sometimes he can’’t get incoming and outgoing calls and always gets a busy signal.B．When he receives a call, it always cuts off.C．When he makes calls, there are always noises.D．He always calls into wrong numbers.
A．Sometimes he can’’t get incoming and outgoing calls and always gets a busy signal.
B．When he receives a call, it always cuts off.
C．When he makes calls, there are always noises.
D．He always calls into wrong numbers.
单项选择题
A．$50.B．$30.C．$20.D．$10.
A．$50.
B．$30.
C．$20.
D．$10.
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