Question

【题目】His theory ______ practice，so you can believe it.

A. based on B. bases on

C. is based on D. is basing on

Answer 1

【答案】C

【解析】句意为：他的理论以实践为基础，所以你可以相信。be based on 为固定搭配，意为“以……为基础”。 所以选C。