_________ is the book?[ ]
A. Where
B. What
C. How
D. Why
答案：A
I began to teach English _______.
A. for two years
B. three years ago
C. in two years
D. three years before
首先考虑诊断为
A．肝癌伴坏死、液化
B．细菌性肝脓肿
C．阿米巴性肝脓肿
D．急性化脓性胆管炎
E．肝包虫囊肿合并感染
