补全对话。

A: Hi, Li Lei!    1   What have you beer doing these days?

B: I have been a member of the school volunteer project.    2  

A. Of course. But I don't know what I can do?

B:    3  

A: Playing the guitar.

B:    4  

A:    5   Thank you.

B: You are welcome.

A. Would you like to join us?

B. I haven't seen you for a long time.

C. Good idea.

D. What's your hobby?

E. Well, you could help coach a guitar team for little kids.

男，77岁。腰背痛1个月来诊。无外伤史，3年前曾行前列腺癌切除术。体格检查：胸腰段叩痛，后凸畸形。双下肢皮肤痛觉及运动无明显异常。

如考虑为前列腺癌转移，下列哪项辅助检查最具特异性

A．血沉增快

B．血液中性粒细胞明显增高

C．尿本周蛋白阳性

D．血液中碱性磷酸酶增高

E．血液中酸性磷酸酶增高

F．C反应蛋白增高