摘要

<正>记性不好总被认为是一件糟糕的事情。然而来自加拿大多伦多大学的两位教授却发现遗忘并不只有负面影响。The next time your brain re-fuses to recall a simple fact orname,be thankful.That’s becauseit could be a sign that your brainis getting rid of unnecessary infor-mation so that it can operate more