A、<img width="183" height="123" src="http://admintk.100xuexi.com/UpLoadImage/2016-09-30/dd992c09-e2e0-4fbf-bb90-01d3315731f9.png" />
B、<img width="184" height="107" src="http://admintk.100xuexi.com/UpLoadImage/2016-09-30/09d05a77-7c58-40be-9de4-233e17b65e5c.png" />
C、<img width="193" height="88" src="http://admintk.100xuexi.com/UpLoadImage/2016-09-30/b927f969-b345-472a-86bb-5caa53293316.png" />
D、<img width="169" height="106" src="http://admintk.100xuexi.com/UpLoadImage/2016-09-30/6ddb7893-0d8e-4769-81f3-d781c479607d.png" />
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