A、<img width="191" height="149" src="http://admintk.100xuexi.com/UpLoadImage/2016-09-30/a73a93a7-7b36-4c2c-80ce-a4ad26d31351.png" />
B、<img width="192" height="147" src="http://admintk.100xuexi.com/UpLoadImage/2016-09-30/d18b0528-6fc7-42ee-a5c1-deb4332e8286.png" />
C、<img width="190" height="145" src="http://admintk.100xuexi.com/UpLoadImage/2016-09-30/31391326-37f8-4859-8823-53ecc3ac236e.png" />
D、<img width="194" height="147" src="http://admintk.100xuexi.com/UpLoadImage/2016-09-30/d087cfca-ebd2-45df-ad48-f90c95d0a808.png" />
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