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.
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单项选择题
A．The effect of ordinary aspects of life on anthropology.B．A good source of information about a society.C．Attitudes toward culture in the 1940’s.D．The relationship between anthropology and military.
A．The effect of ordinary aspects of life on anthropology.
B．A good source of information about a society.
C．Attitudes toward culture in the 1940’s.
D．The relationship between anthropology and military.
单项选择题
A．Decide for himself what is best.B．Communicate his career hopes.C．Stop hindering his own progress.D．Look for another career.
A．Decide for himself what is best.
B．Communicate his career hopes.
C．Stop hindering his own progress.
D．Look for another career.
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