肝转移瘤的诊断依据主要有()。
A.有原发肿瘤病史
B.肝内有单发或多发病灶
C.病灶呈“牛眼”征
D.肝回声均匀
E.病灶有宽的晕环
参考答案:A, C, D, E
You did really well on the last English test, ______?[ ]
A. do you
B. don't you
C. did you
D. didn't you