上游充通大学 材料科学与工程学院 School of Materials Science and Engineering.SITU 1896 1920 1987 2006 1).There is no written record Usually there is no complete written record for your audience to consult your talk;they (hopefully)listen This means that simple,direct presentations are best:otherwise you risk losing your audience's attention. 图ln other words. don't just present to your audience,but rather guide them through your presentation. 工程学导论-李军（材料B楼308）1896 1920 1987 2006 工程学导论-李军（材料B楼308） There is no written record Usually there is no complete written record for your audience to consult your talk; they (hopefully) listen. This means that simple, direct presentations are best: otherwise you risk losing your audience's attention. In other words, don't just present to your audience, but rather guide them through your presentation. 1)