a是最大的负整数，b是绝对值最小的数，则a+b=﹙    ﹚．

Which of the following statements best expresses the main idea of the passage?

A.One’s physical appearance can influence our first impression.

B.Our first impression is influenced by the sensitivity of our brain.

C.Stereotypical impressions can be dead wrong.

D.We should adopt mature thinking when getting to know people.