问题补充:
单选题If____unsolved,theproblemoffoodsafetymayleadtomoreseriousresults.A.makingB.remainedC.leftD.taking
答案:
C解析考查省略句。The problem与leave构成被动关系,使用过去分词。完整的结构应该是If the problem is left unsolved, the problem of food safety may lead to more serious results.句意:如果这个问题被留在没有被解决,它会导致更严重的后果。