A、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/f393679d-d559-487f-9bcf-0ee3aad59569.jpg"title="1373970730375.jpg" alt="1373970730375.jpg"/>
B、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/0ebfc4fc-3e28-4fe4-81cd-9ada2348420a.jpg"title="1373970742250.jpg" alt="1373970742250.jpg"/>
C、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/4f928deb-1ae0-4c72-9042-1c5e9321cb26.jpg"title="1373970754453.jpg" alt="1373970754453.jpg"/>
D、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/b93ecc44-adff-4e3b-abdb-8deffb1f7613.jpg"title="1373970775312.jpg" alt="1373970775312.jpg"/>
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