Free medical treatment in this country covers sickness of mind as well as ___ sicknesses.

问题描述:

Free medical treatment in this country covers sickness of mind as well as ___ sicknesses.
A.normal
B.average
C.regular
D.ordinary
为什么不选a

这是辨析,normal是norm的形容词,norm表示规范,normal的正常就是那种符合规范的正常.
average是表示程度的中等.
regular表示定期的正常,常规.
ordinary是普通,没有特殊的.
选D吗?个人认为这个题目本身欠妥,mind应该和body,soul相对.