He was a good student and scored(得分) average in most subjects.A. belowB. ofC. onD. above

问题补充：

He was a good student and scored(得分) average in most subjects.

A. below

B. of

C. on

D. above

答案：

A. below

B. of

C. on

(答案→)D. above

解析：考察介词。句意为：他是一个好学生,大多数科目得分高于平均水平。above average高于平均数；below average低于平均数；on average平均起来，一般说来。