A、<img src="http://admintk.100xuexi.com/UpLoadImage/2013-05-07/8fd2ea06-da25-43eb-b6f4-82893ef7de6a.jpg" width="145" height="21" />
B、<img src="http://admintk.100xuexi.com/UpLoadImage/2013-05-07/4c32a603-8cce-4449-9a1b-021629832e39.jpg" width="191" height="25" />
C、<img src="http://admintk.100xuexi.com/UpLoadImage/2013-05-07/747d58e8-46ee-45e1-adbf-ea691e3cd0f1.jpg" width="163" height="23" />
D、<img src="http://admintk.100xuexi.com/UpLoadImage/2013-05-07/511e8c77-e353-4f2f-b7fd-198f0a17d300.jpg" width="169" height="23" />