A、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/cf4c0997-f82e-4478-b648-47adfca80e44.jpg"title="1373948661375.jpg" alt="1373948661375.jpg"/>

B、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/c2fd453a-724e-43c3-82b0-ed36c4bae012.jpg"title="1373948670171.jpg" alt="1373948670171.jpg"/>

D、不能确定