Which of the following statements is correct when making a presentation?

A.It’s not important to attract the audience’s attention at the beginning.

B.It’s essential to give a pause before saying something important.

C.You’d better answer questions from the audience after conclusion.

D.You don’t have to make eye contact with your audience, just speak by yourself.

正确答案：It’s essential to give a pause before saying something important.；You’d better answer questions from the audience after conclusion.