单选题Moreover 27.6 percent of 

问题补充：

单选题Moreover,27.6percentofthose____preferredreadingontheirmobilephones,whichwas4.6percenthigherthanlastyear.A.surveyingB.to surveyC.surveyedD.having surveyed

答案：

C解析考察分词用法。Those与survey构成被动关系，表示被调查的那些人。故C正确。句意：而且在被调查的人中有百分之27.6更喜欢用手机阅读，比去年高了4.6个百分点。