When we finally arrived a lady gave us a introduction of the university.A. clearB. brief

问题补充：

When we finally arrived, a lady gave us a introduction of the university.

A. clear

B. brief

C. main

D. abstract

答案：

A. clear

(答案→)B. brief

C. main

D. abstract

解析： brief “简要的”。A“清晰的”；C“主要的”；D“抽象的”。