诊断乳腺癌时，可考虑检测的肿瘤标志物（）。
A.AFP
B.CEA
C.CA125
D.CA15-3
E.hCG
参考答案：B, D
Mr. Black was so____ to his research that he seldom cared about what happened around him.
A．devoted
B．concerned
C．absorbed
D．used
加速顶 accelerator unit
