_____ economic, political and cultural differences, it is difficult for China and America to fully understand each other．

___________ , is that your school ID card

Not a single book is allowed _________ out of the reading room according to the new rule

填入下面文段空白处的词语，最恰当的一组是2016年中国大学生就业报告6月12日上午发布。报告指出， ① 近两年经济下行， ② 2015届大学生毕业半年后就业基本稳定， ③ 大学毕业生的创业和深造比例上升，减少了需就业的基数；大学生自主创业比例从2013届的2．3%上升到2015届的3．0%。 ④ ，信息、教育、医疗等知识密集型产业近年来增长较快， ⑤ 大学毕业生在经济结构变化中的就业适应性更好， ⑥ 就业受传统经济的影响较其他人群更小。

Bob ran the 100 meters in 9.91 seconds, and I have not seen _________ this year.