单项选择题
http://nos.netease.com/edu-image/9E3E4E574D5FFE523B8F5AD62D4BEFB6-1443517949579?imageView&thumbnail=520x520&quality=100
A.netease.com/edu-image/333A248DF0CEF2EE1DE4D13E4CF718BE-1443518027866?imageView&thumbnail=520x520&quality=100
B.netease.com/edu-image/E9448C6DF3CB1210B74E15557F59FFED-1443518014193?imageView&thumbnail=520x520&quality=100
C.netease.com/edu-image/AC738C8A836DB4F542956EA8CB91D70F-1443518007423?imageView&thumbnail=520x520&quality=100
D.netease.com/edu-image/E5B9471CF3726F4610D4EE24C591F070-1443518020988?imageView&thumbnail=520x520&quality=100