第21题: [单项选择]Life insurance is financial protection for dependents against loss ______ the bread-winner's death. A. at the cost of B. on the verge of C. as a result of D. for the sake of 参考答案:C 答案解析:介词短语。at the cost of意为“以……为代价,用……换来的”;on the verge of意为“在……的边缘,接近于”;as a result of意为“由于……的结果”;for the