Question

The book was written careful observations and detailed studies.

A. on the ground of B. on behalf of

C. on average D. on the basis of

 

Answer 1

D

【解析】句意: 这本书是在仔细观察与细致研究的基础上撰写的。on the ground of因为, 由于; on behalf of代表; on average平均; on the basis of“在……基础上”, 符合题意。