问题补充:
单选题Nothingismoreimportantthanhealth,soitisunwisetobuildupourbusiness________ourhealth.A.at the mercy ofB.at the expense ofC.in face ofD.in relation to
答案:
B解析此题是词组辨析:at the mercy of 任由…支配,.at the expense of以…为代价 in face of面临in relation to和…有关,根据句意:没有什么比健康重要,以健康为代价扩大生意是不明智的。所以选B。