A、<img width="115" height="58" src="http://admintk.100xuexi.com/UpLoadImage/2016-09-29/b633e400-4d29-424e-81a1-e203b0536b84.png" />
B、<img width="112" height="61" src="http://admintk.100xuexi.com/UpLoadImage/2016-09-29/d601add6-a417-4bd2-aa34-c50c8cc9e1c6.png" />
C、<img width="112" height="60" src="http://admintk.100xuexi.com/UpLoadImage/2016-09-29/a5fd53ed-acac-4c34-b90e-ddc21716be99.png" />
D、<img width="112" height="60" src="http://admintk.100xuexi.com/UpLoadImage/2016-09-29/a1a83679-352b-476f-865b-2059520d2986.png" />