单项选择题
A.cleverer B.happier C.reluctant D.slower
A. They lose their memory at a slower rate B. Their brains can store much more information C. They rarely realize they have memory problems D. They are more likely to remember false information
A. do not talk as much as possible. B. do not pay attention to the speaker. C. like to ask about other people’s health D. bring too many ritual greetings into a conversation.