听力原文:When is Dr. Smith usually in the clinic?(A) He works only Tuesdays and Fridays. (
听力原文:When is Dr. Smith usually in the clinic?
(A) He works only Tuesdays and Fridays.
(B) His office is Room 201 on the second floor.
(C) It is time for picnic.
(23)
A.
B.
C.
请帮忙给出正确答案和分析,谢谢!