Correct the errors in the following sentence.
One kind of defense mechanism is substitution. A form of self-deception in which we replace one goal with another. For example, if we cannot be A-level student, we may try to be socially popular.
【正确答案】：One kind of defense mechanism is substitution, a form of self-deception in which we replace one goal with another. For example, if we cannot be A-level student, we may try to be socially popular.
【题目解析】：p55
