填空题 Faces, like fingerprints, are unique. Did you ever wonder how it is possible for as to recognize people? 1 Yet a very young child—or even an animal, such as a pigeon-can learn to recognize faces. We all take this ability for granted.

• A. Even a skilled writer probably could not describe all the features that make one face different from another.
• B. Like the human face, human personality is very complex.
• C. But we can easily tell the" good guys" from the" bad guys" because the two types differ in appearance as well as in actions.E. Bookworms, conservatives, military types-people are described with such terms.F. We also tell people apart by how they behav