单项选择题

The speaker went on and on, ______ to his listeners' obvious boredom.

A．obligated
B．obsessive
C．obvious
D．oblivious
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单项选择题
Wilson stood dazed in the middle of Times Square, ______ of the crowds that surrounded him.
A．oblivious
B．capricious
C．precipitous
D．ubiquitous
单项选择题
Such ______ as self-respect and industriousness merit the full backing of an employer.
A．advantages
B．traits
C．interests
D．shortcomings
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