问题补充:
Both the summer and the winter Olympic Games are held every four years on a basis.
A. magical
B. regular
C. familiar
D. logical
答案:
A. magical
(答案→)B. regular
C. familiar
D. logical
解析:句意,夏季奥运会和冬季奥运会都是按照规定,每四年举办一次。magical 魔力的 regular 有规律的 familiar 熟悉的 logical 逻辑的,根据题意,故选B。