单选题 The doctor was ______ about what to do with the case: he just couldn"t find the cause of the illness.
【正确答案】 A
【答案解析】[解析] 题干:医生对这个病例手足无措,他找不到致病的病因。本题考查形容词。puzzled“疑惑不解”,amused“娱乐的”,surprised“惊讶的”,curious“好奇的”。根据语义,本题正确答案为puzzled。