Question

David’s father is a doctor______Beijing International Hospital.

1. A.
   in
2. B.
   at
3. C.
   on

Answer 1

B
本题主要考查介词辨析，on在...上面；in在...里面；根据句意，大卫的爸爸是一位北京国际医院的医生，在此at Beijing International Hospital介词短语作定语修饰名词doctor，故选B。