单选题 British scientists have found how to diagnose the disease, which causes loss of memory and personality change.
A. control B. determine C. prevent D. treat

【正确答案】 B
【答案解析】[解析] 句意是：英国的科学家们已经知道如何诊断这种疾病，这种能够引起人们丧失记忆和改变性格的疾病。diagnose的意思是：诊断。据此判断，答案是B。