精选优质文档-倾情为你奉上模拟试题十一第二节:完形填空(共20小题:每小题1分,满分20分)阅读下面短文,掌握其大意,然后从3655各题所给的四个选项(A、B、C和D)中,选出最佳选项。You have waited 45 minutes for the valuable 10 minutes break between classes. But when the bell for the next class rings, you cant 36 how quickly time has passed.If you are familiar with this 37 , youll know how time flies when you are having fun-and 38 when you are bored. Now scientists have 39 a reason why this is the case.Scans have shown that patterns of activity in