A、<img width="100" height="57" src="http://admintk.100xuexi.com/UpLoadImage/2016-09-30/f4e280fe-4d61-4272-ac66-c129ee9a5af2.png" />
B、<img width="100" height="65" src="http://admintk.100xuexi.com/UpLoadImage/2016-09-30/4895534e-e517-4bde-b3a5-ba657ee59056.png" />
C、<img width="99" height="56" src="http://admintk.100xuexi.com/UpLoadImage/2016-09-30/344ef60e-57b7-4cd4-b13b-6be8afa4ed5b.png" />
D、<img width="100" height="56" src="http://admintk.100xuexi.com/UpLoadImage/2016-09-30/bdb24495-9a7f-437e-84d6-460a122ebba8.png" />
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