A、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/87e4346e-3191-447a-a9c4-31f159433df9.jpg"title="1374207021562.jpg" alt="1374207021562.jpg"/>
B、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/6b75d6d2-727d-4975-ab3a-d7aeef14ce19.jpg"title="1374207037484.jpg" alt="1374207037484.jpg"/>
C、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/aa50f9d7-4fb3-4f52-800a-d8a27a27c6e9.jpg"title="1374207049921.jpg" alt="1374207049921.jpg"/>
D、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/ccee4b59-b39d-457e-9956-c9110d09ad64.jpg"title="1374207066687.jpg" alt="1374207066687.jpg"/>
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