After studying in a medical college for five years, John her job as a doctor in the countryside.
A. set out
B. took up
C. set up
D. set off
网友回答
A. set out
(答案→)B. took up
C. set up
D. set off
解析：句意：在大学里学习了五年医学之后，约翰在乡村当了一名医生。set out开始； take up 从事； set up建立； set off动身。根据句意故选B。