1 . Even when an idea sounds impossible, there may be an aspect of it that is based on truth. （根据句子意思写出句中划线单词的中文意思）
• aspect ___________________________________________
• be based on ___________________________________________

2 . A police drama series called The Knockout is ________ (base) on real organized crime cases.

3 . This film ________ the novel. It is interesting and moving.

A．is based in

B．is based to

C．is based on

D．is based by

4 . The story ________ ________ ________ (基于) her own experience.