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题目内容
（请给出正确答案）
The smog is due（ ）invisible gases，mostly from automobile exhaust.
A.from
B.to
C.for
D.with
B.to
C.for
D.with
参考答案
参考解析
解析：题目意为“烟雾是由隐形气体引起的，主要来自汽车尾气。”due to为固定搭配，意为“由于”，后面接名词短语，故选项B正确。
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