A、<img width="192" height="48" src="http://admintk.100xuexi.com/UpLoadImage/2013-05-07/071f3dfd-de02-49e0-851d-057db6493680.png" />
B、<img width="246" height="25" src="http://admintk.100xuexi.com/UpLoadImage/2013-05-07/f0b452c0-6435-45de-b772-5d8aa78fdc17.png" />
C、<img width="188" height="25" src="http://admintk.100xuexi.com/UpLoadImage/2013-05-07/b220005b-63b7-426b-a1bd-4fa2d9a2db2c.png" />
D、<img width="188" height="24" src="http://admintk.100xuexi.com/UpLoadImage/2013-05-07/77c029fa-8280-4d27-839a-0023ec9ee455.png" />