The real-name policy for train tickets has been applied to all trains since January1,2012 in China, will make it easy for people to get tickets
A. which
B. when
C. what
D. where
网友回答
(答案→)A. which
B. when
C. what
D. where
解析：考察非限制性定语从句。本题定语从句的先行词比较特殊，关系代词which指代的是前面一句话的内容,引导非限制性定语从句,在句中做主语。When和where不能在句中做主语，what不能引导定语从句。句义：从2012年1月，铁路购票实名制已经被运用到所有的火车上了，这讲让人们更容易地买到车票。故A正确。