以下检查对肝癌的诊断最有临床价值的是（）
A.肝区疼痛
B.肝脏触之质硬
C.触诊肝脏有压痛
D.肝边缘钝
E.肝进行性肿大，表面不平
参考答案：E
3岁男孩，3天前与1名猩红热患儿接触，既往没有猩红热病史。为防止该患儿发病，应采取的正确措施为（）
A.口服SMZco3天
B.青霉素5天
C.肌注丙种球蛋白
D.接种疫苗
E.干扰素
By serving others, a person focuses on someone other than himself or herself, _____ can be very eye-opening and rewarding.[ ]
A. who
B. which
C. what
D. that
