单项选择题

These pollutants can be ______ hundreds and eve thousands of kilometers by large air masses.

A．contained
B．conveyed
C．contaminated
D．conserved
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单项选择题
Since she was alone, she opened the door ______, leaving the chain lock fastened.
A．warily
B．consciously
C．audaciously
D．recklessly
单项选择题
He is a hypocrite, a liar, a thief—______, he is the greatest devil I ever know.
A．as a consequence
B．as a rule
C．as a matter of fact
D．as a matter of routine
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