A、<img width="114" height="58" src="http://admintk.100xuexi.com/UpLoadImage/2016-09-30/3cf2ab38-0cf5-4320-ab26-80a5aff2f99d.png" />
B、<img width="119" height="55" src="http://admintk.100xuexi.com/UpLoadImage/2016-09-30/b76beefc-d76d-43e4-9d4d-79caf47405b7.png" />
C、<img width="112" height="59" src="http://admintk.100xuexi.com/UpLoadImage/2016-09-30/bef26370-e62a-4f37-a556-0a345e0d8213.png" />
D、<img width="119" height="65" src="http://admintk.100xuexi.com/UpLoadImage/2016-09-30/38c54ed1-b672-4a9b-9466-4379a353805c.png" />