单项选择题

Chinese of ten shake my hand and don't let go. They talk away contentedly, ______ of my discomfort and struggle to disengage my hand.

A．oblivious
B．patent
C．obvious
D．pernicious
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单项选择题
The chief editor thought he took some liberties with the original in translation. So it was necessary that he make the ______ suggested.
A．alterations
B．alternatives
C．alternations
D．altercation
单项选择题
What we consider a luxury at one time frequently becomes a ______, many families find that ownership of two cars is indispensable.
A．fashion
B．necessity
C．proclivity
D．nuisance
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