in turn和by turns的区别

题目

in turn和by turns的区别
The Olympic Games,which used to have strong religious associations,nowadays are held every four years in different countries____.
A by truns B in turn C out of turn D to a turn

答案

by turns 轮流,一种交替的寓意
in turn 依次,按着一定的顺序进行
根据句意,奥林匹克运动会每四年在不同的国家轮流举行一次.
因为举办国并不是像春夏秋冬依次轮流.而是需要通过争取举办权,轮到哪个国家不一定.所以不能用依次.
所以应该是by turns
话说还真没见过by turn和in turns这两个短语的说.
希望对你有所帮助~