What is the introduction paragraph?

A.It is usually the first paragraph of an argumentative essay.

B.It serves as a 'map' of the essay.

C.It is supposed to raise readers’ interest and should not be too long.

正确答案：It is usually the first paragraph of an argumentative essay.,It serves as a 'map' of the essay.,It is supposed to raise readers’ interest and should not be too long.