They ________ drinking although they are drivers, which is very dangerous both to them and the passengers．A.give upB.devote themselves toC.quitD.abandon themselves to
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D解析根据句意“虽然他们是司机，但他们还是沉溺于饮酒……”。although表示让步，说明前面的行为与后面的情况是相悖的，所以排除A、C两项；devote oneself to“献身于”，与题意不符；abandon oneself to“沉溺于”，切合题意，所以选D项。