“诚招天下客，誉从信中来”，讲的是导游员“真诚公道”的职业道德。 ( )
参考答案：错
— How about the book you are reading?
— Good indeed. It _______many problems we have come across in our study. [ ]
A. says
B. talks
C. covers
D. refers
怎样理解以人为本的“本”？
