【简答题】A.He knows clearly what he needs and wants. B.He has to give his audience some in-depth views. C.He knows it's very important to attract the attention of his audience. D.He knows how he delivers his s...
【简答题】A.He knows clearly what he needs and wants. B.He has to give his audience some in-depth views. C.He knows it's very important to attract the attention of his audience. D.He knows how he delivers his s...