Nearly 56 percent of Chinese believe that traffic order got even worse after tightened traffic regulations at the beginning of 2013.
A. have been adopted
B. were adopted
C. adopted
D. had adopted
网友回答
A. have been adopted
(答案→)B. were adopted
C. adopted
D. had adopted
解析：句意：自2013年初实施强化交通规则后，将近56%的中国人认为交通秩序变得很糟糕。。traffic
Regulations和adopt是被动关系，所以排除CD，而时间是2013年初，用一般过去式的被动语态，所以选B。