一How are you?一A. I am a doctor.B. Fine thanks.C. That’s OK.D. How do you do?

问题补充：

一How are you?

一

A. I am a doctor.

B. Fine,thanks.

C. That’s OK.

D. How do you do?

答案：

A. I am a doctor.

(答案→)B. Fine,thanks.

C. That’s OK.

D. How do you do?

解析：在英文中，How are you？是问对方的情况如何，也可以问身体情况如何，很好，谢谢与问题相符合，故本题选B。