单项选择题

A．Less than 6 months.
B．2 months.
C．6 months or more.
D．1 month.
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单项选择题
A．Why species don’t avoid extinction by adapting.B．Why species become extinct at the rate they do.C．Why humans aren’t extinct.D．How many species aren’t extinct.
A．Why species don’t avoid extinction by adapting.
B．Why species become extinct at the rate they do.
C．Why humans aren’t extinct.
D．How many species aren’t extinct.
单项选择题
A．She lost a finger.B．She became a surgical nurse.C．Someone hit her in the nose.D．She had an operation on her nose.
A．She lost a finger.
B．She became a surgical nurse.
C．Someone hit her in the nose.
D．She had an operation on her nose.
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