A、<img width="113" height="43" src="http://admintk.100xuexi.com/UpLoadImage/2016-09-29/7f4bc6d8-ce40-4c34-abf1-fa7c0ef67079.png" />
B、<img width="126" height="33" src="http://admintk.100xuexi.com/UpLoadImage/2016-09-29/95499f34-51c7-486b-b517-77184747b7fc.png" />
C、<img width="120" height="26" src="http://admintk.100xuexi.com/UpLoadImage/2016-09-29/b29e624d-5738-4c6a-bd24-3c60ce95628a.png" />
D、<img width="114" height="44" src="http://admintk.100xuexi.com/UpLoadImage/2016-09-29/834a349a-5c41-4216-b7e1-de30b9da680a.png" />