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Nearly 56 percent of Chinese believe that traffic order got even worse after tightened traffic regulations ______at the beginning of 2013.
A.have been adoptedB.were adopted
C.adoptedD.had adopted
B

试题分析: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。
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