As we all know medcial examination will help out health problem as early as possible.A.

问题补充：

As we all know, medcial examination will help out health problem as early as possible.

A. regular

B. general

C. common

D. normal

答案：

(答案→)A. regular

B. general

C. common

D. normal

解析：形容词辨析。A常规的；B一般的；C常见的；D正常的。结合句意可知A正确。句意：整日我们所知，常规的医学检查会帮助我们尽早的发现健康问题。