单项选择题

He can't be a driver; the colorblindness .deprived him of the ability to make a ______ between red and green.

A．comparison
B．division
C．distinction
D．difference
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单项选择题
Nobel was happy when together with others, and often felt very lonely ______.
A．by himself
B．in person
C．in private
D．as individual
单项选择题
All the words and actions of a citizen should ______ the nation' s laws and regulations.
A．confess to
B．correspond to
C．confine to
D．compare to
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