A、0<br/>
B、1
C、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/ueditor/jsp/upload/image/20160108/1452226864396005593_222.png" title="8385476868653584" alt="222.png"/>
D、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/ueditor/jsp/upload/image/20160108/1452226869865049645_333.png" title="9181924051758433" alt="333.png"/>
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