The function of the intruction in a speech includes（）.

The function of the intruction in a speech includes（）.
A.Gaining the attention of the audience
B.Stating the purpose of the speech
C.Gaining the good will of the audience
D.Previewing the structure of the speech
正确答案：Gaining the attention of the audience；Stating the purpose of the speech；Gaining the good will of the audience；Previewing the structure of the speech