A、<img width="300" height="122" src="http://admintk.100xuexi.com/UpLoadImage/2016-09-30/30347996-1e21-45cf-9cce-47e399a09b4f.png" />
B、<img width="301" height="139" src="http://admintk.100xuexi.com/UpLoadImage/2016-09-30/a6b50371-a875-4cce-bb7c-95c7c679f683.png" />
C、<img width="301" height="120" src="http://admintk.100xuexi.com/UpLoadImage/2016-09-30/afa61e63-707b-4b3f-9d9d-d52d56507064.png" />
D、<img width="298" height="129" src="http://admintk.100xuexi.com/UpLoadImage/2016-09-30/900f0001-d104-4912-9928-232c2828d513.png" />
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