一Is your sister a worker or a doctor?— A. She is twenty．B. No，she isn’tC. She is a doctor

一Is your sister a worker or a doctor?
— ．
A. She is twenty．
B. No，she isn’t
C. She is a doctor
D. She likes her job

A. She is twenty．B. No，she isn’t(答案→)C. She is a doctor D. She likes her job解析：本题是一个选择疑问句，要么回答她是一名工人，要么回答她是一名医生，故本题选C。

这个问题的回答的对