When you finish reading the book you will have better understanding of life.A. a; theB. t

问题补充：

When you finish reading the book, you will have better understanding of life.

A. a; the

B. the; a

C. /; the

D. a; /

答案：

A. a; the

B. the; a

C. /; the

(答案→)D. a; /

解析：考查冠词。第一空是固定词组have a understanding of理解…；第二空life作为生活，要单独使用，不要冠词。句意：当你读完这本书的时候，你会对生活有一个更好的理解。故D正确。