Herearetipsforasuccessfulspeechfromaprofessionalspeechw...
问题详情：Herearetipsforasuccessfulspeechfromaprofessionalspeechwriter：Nospeechshouldlastmorethan20minutes. 36 TheSermonontheMount,acollectionofsayingsandteachingsofJesus,forexample,lastedhardlymoret...