单项选择题

Around 80 percent of the ______ characteristics of most white Britons has been passed down from a few thousand Ice Age hunters.

A．spontaneous
B．intelligible
C．genetic
D．random
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单项选择题
Fashion designers are rarely concerned with vital things like warmth, comfort and ______.
A．durability
B．capability
C．stability
D．availability
单项选择题
Various efforts have been made over the centuries to predict earthquakes, including observing lights in the sky and ______ animal behavior.
A．absurd
B．abnormal
C．exotic
D．erroneous
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