As is known to all,having a good knowledge of vocabulary is______language learning.

As is known to all,having a good knowledge of vocabulary is______language learning.A. based onB. based to C. basic to D. basic on

热心网友

选C.上面那位仁兄估计是看错了句子的意思：众所周知，拥有很好的词汇知识是学习一门语言的基础。“基础”在前，所以用 A be basic to B. A是B的基础。如果上面的句子反过来说：Language learning is based on a good knowledge of vocabulary。就用 A be based on B。A 形成（建立）于B基础之上。大家以为呢？

热心网友

肯定是A。based ...on固定搭配。