题目内容：
Which of the following sentences is NOT mentioned in the passage?( )(本题1.0分)A、 Professor Matsuzawa suggested that people should use their brains more often because thinking can stop the brain from contraction.
B、 The professor’s tests prove that old people’s brains have contracted more quickly than other young people’s.
C、 The research findings are based on the study of the brain sizes of different people.
D、 The team of doctors made these tests in order to show how the brain works.
参考答案：