单选题
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
【正确答案】
A
【答案解析】
句意：塑料袋用来装东西很适用，因为它们干净、有韧性而且价格便宜。by virtue of 由于。In addition to 除…之外。For the sake of 为了…的利益。As opposed to 与…相反。根据句意，应选A。
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