What are the key elements in delivering an informative presentation?

A、Preparingyourpresentation:Don’tforgetyourTake-Homemessage.;
B、DesigningyourPowerPointslidessmartly:Displayonlythemainandsignificantpoints.;
C、Structuringyourpresentationwithanopeningandintroductiontocatchtheaudience’sattention;abodystructuretobuildclearandlogicrelationshipoftheideas;anendingpartsummarizingkeyelementsandkeyappealofyourpresentationimpressively.;
D、Effectivewaystoachievesmoothtransition,monitoryourlanguage,andhandleQ&Ainyourpresentation.