A、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/f40da309-f819-4dd6-9bf3-d5fef9dc2536.jpg"title="1373949933375.jpg" alt="1373949933375.jpg"/>

B、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/425b32e8-d241-43f7-812a-fec8b8246259.jpg"title="1373949941843.jpg" alt="1373949941843.jpg"/>

C、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/f867434b-5a3b-43ba-8a61-4eb213759484.jpg"title="1373949948765.jpg" alt="1373949948765.jpg"/>

D、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/a8ad608c-8275-4095-ac7a-8fc1388254c3.jpg"title="1373949962062.jpg" alt="1373949962062.jpg"/>