—Where is the library, Jane?
—_______________
A:This way, please.
B:I don't know, either.
C:Sorry, I can't.
D:Of course I do.
下列事件按时间的先后顺序排列正确的是( )
①阿保机称帝 ②赵匡胤建立北宋 ③澶渊之盟
④宋夏和议 ⑤西夏建立