The boy is considered _____ his work very well. [ ]

A. to do

B. to have done

C. doing

D. having done

坚持质量第一，力求出版物有尽可能高的思想性、科学性和艺术性，就要做到（）。

A.选题对路，内容正确充实

B.编校质量严格把关

C.物质生产质量严格要求

D.装帧设计质量精益求精

E.出版图书追逐时尚，引领潮流