“以史为镜，可以知兴替”，唐太宗吸取了隋亡的教训，励精图治，在位期间出现了清明的统治时期，史称（　　）

C

     There are many festivals at our school. This month is October. In October there is a sports festival. We have the volleyball game and the basketball game during(在……期间) the festival. On October 15th，there is an English festival. On that day we have an English speech contest(演讲比赛)．On October 19th，we have a school trip. We go to Beijing with the teachers. On the last day of this month，there is a music festival. On that day we can enjoy beautiful music. It's really wonderful. Next month，there is an art festival. Students often display(展示) their pictures on that day.

电视连续剧《天仙配》中有这样的情节：唐朝张百胜因孝道而升天成为玉皇大帝，而后他的年龄基本上是恒定的，七仙女亦然，永葆青春。假设此情景成立，其科学依据最有可能的是

读图1、2、3，完成下列问题．
北京是我们伟大祖国的首都，历史文化悠久．