I remember Alice, my little niece, often asked questions that children ________ would ask.
A.twice as old as her ageB.twice so old as sheC.twice her ageD.twice older than her age在线课程C
“of+年龄”结构。如果名词age前有形容词修饰省去if，C表示“她年龄的两倍”，其他项搭配均有问题。