问题补充：
Many doctors and scientists are working hard on curing AIDS. We hope AIDS one day.
A. will cure
B. will be cured
C. will treat
D. will be treated
答案：
A. will cure
(答案→)B. will be cured
C. will treat
D. will be treated
解析：考查动词辨析及时态语态.cure治疗,治愈;treat治疗,对待,款待.句意:为了治愈艾滋病,许多医生和科学家们正在努力工作.我们希望艾滋病有一天能够被治愈.结合语境可知下文主语为动作对象,故用被动语态.故选B.
