解析： 根据题干关键词summer vacation可定位到原文的第六段，由第一、二句“The summer vacation requires special financial planning. Expenses for this period must be carefully estimated and added to costs for the academic year in order to give a realistic total figure for the calendar year”,意思是暑假更要好好的计划自己的开支，可知暑假需要花费更多钱。因此，应该选B。从本段中“University eating facilities, and some university and college housing facilities, close during this time”这句话中可以看出食堂是关门的，所以C项错误，另外原文中显示一些宿舍楼是关闭的，所以A项中说所有宿舍楼都是关闭的这种说法也是错误的。因此，运用排除法也可判断答案为B。
