单项选择题

Plastic bags are useful for holding many kinds of food, ______ their cleanness, toughness and low cost.

A．by virtue of
B．in addition to
C．for the sake of
D．as opposed to
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单项选择题
He ______ himself bitterly for his miserable behavior that evening.
A．repealed
B．resented
C．replayed
D．reproached
单项选择题
Our new firm ______ for a credible, aggressive individual with great skills to fill this position.
A．have looked
B．are looking
C．is looking
D．look
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