单项选择题

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

A．intelligible
B．random
C．spontaneous
D．genetic

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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．abnormal
B．exotic
C．absurd
D．erroneous
单项选择题
The term glass ceiling was first used by the Wall Street Journal to describe the apparent barriers that prevent women from reaching the top of the corporate （）

A．seniority
B．superiority
C．height,
D．hierarchy
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