语法与词汇 If you_____ something, such as food or drink, you reduce its qualityor make it weak, for example by adding water to it.

【正确答案】 A

【答案解析】句意：如果你在食物或饮料中掺杂一些东西，你就会降低它的质量，或者降低酒精浓度，例如加水。adulterate掺杂。moor系住；使停泊。vaccinate给……注射疫苗。sue控告。因此，本题的正确答案为A。