How good is your memory? Answer these four questions: What did you have for breakfast yesterday? What clothes did you wear last Friday? Who did you talk to yesterday? Where did you go last Saturday? If you can answer all the four questions, your 1 _____ is very good.Education 2_____ in England have been looking into ways to improve our memory of what we read. The specialists found something to help: facial 3_____. They gave ten students a happy article to read. Five of the students read the happy article while smiling. Five students read the happy article while frowning. Then they answered 4_____ questions. The smiling students remembered more of the happy article than the 5_____ students.Then the specialists gave ten students another 6_____ to read. It was an angry letter to the editor of a newspaper. Five students read the angry article while 7_____, and five students read the angry article while frowning. Which group remembered better? You’re right. The frowning students.The specialists don’t know why 8_____ expressions help memory. They are 9_____ to study the relationship between the 10_____ and the body. Until they find the answer, keep smiling (or frowning?)![音频]