单选题DuoDuo is a great lo

问题补充：

单选题DuoDuoisagreatlonetravelercrossingbordersofnation,languageandhistory,aswellasadeterminedpredictorofsomeofthemostbasic,universalhumanvaluesthat_____inourtroubledmoderntimes.A.have been overlookedB.have overlookedC.has been overlookedD.is overlooked

答案：

A解析that引导定语从句，先行词为values，意为在一团混乱的现代社会中所被忽视的价值观。