单选题
In some African countries, the cost of treating an AIDS patient may ______ his or her entire annual income.
【正确答案】
D
【答案解析】[解析] A项,“exploit”意为“开发、开采、开拓,利用”;B项,“expel”意为“驱逐,赶”;C项,“expire”意为“满期,届期”;D项,“exceed”意为“超过,胜过”,由句意可知,“艾滋病患者的治疗费用有可能会超出他们一年的收入”,因此选择D。