单项选择题

Questions 11 to 13 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions. Now listen to the passage. Which. of the following is NOT true of mental models

A.They set what is important in life.
B.They largely define who we think we are.
C.When they are associated with rewards, we fear and rebel against their disruption.
D.They do not vary.