A、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/ueditor/jsp/upload/image/20151123/1448264353828064973_blob.png" title="7003876465493297" alt="blob.png"/>
B、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/ueditor/jsp/upload/image/20151123/1448264364681022807_blob.png" title="8766054602402764" alt="blob.png"/>
C、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/ueditor/jsp/upload/image/20151123/1448264376705093622_blob.png" title="315984038483661" alt="blob.png"/>
D、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/ueditor/jsp/upload/image/20151123/1448264387273006931_blob.png" title="9556860403234441" alt="blob.png"/>