Some people haven’t realized something as mon as _______to the sun for a long time will do harm to their skin and even cause skin cancer.A.exposingB.being exposedC.having exposedD.exposed
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B解析考查非谓语和省略。句意“一些人还未意识到像在太阳下暴晒太久对皮肤有伤害一样平常的事情。”skin和expose之间是动宾关系，故用被动，平常A、C、D。as... As句型中，第二个as是连词，后跟从句，从句的主语是动名词。故选B。