Group+C

=.use of the voice in oral presentation= = = =1. should speak loud enough to be heard clearly. For example, you should not "mumble" and take the number of audience and space into consideration.= = = =2,should continously speak without any pause for a long time, it is good to take scripts for reference.= = = =3,should pause when the important points come, for example, while giving facts and examples= = = =4,should use fillers, like 'I mean' ,'that is to say', 'let me think', ect.when the speaker needs time to respond= = = =5,should change the tone to stress the idea and say it up and down= = = =6 should control the speed of the speech so that audiance can understand=