My grandma is__70 years old,but she can still look after herself. A more B over C more than D than

题目

My grandma is__70 years old,but she can still look after herself. A more B over C more than D than
选哪一个,为什么,谢谢.

答案

B
因为此题没有比较对象,只是说奶奶超过70岁了,但还能自己照顾自己!
所以选B,其他选项都有比较级!