- 问题详情:AsEricHofferoncesaid,“Thehardestarithmetic(算术)tomasteristhatwhichenablesustocountourblessings.”Accordingtoalegend,ayoungmanwhilewanderingaroundthedesertcameacrossaspringofdeliciousclearwater.Thewaterwasso 41 andhefilledhisleathercanteen(水...
- 26044