A、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/9b242a44-4a75-40df-9cb1-c7bcfa01fdac.jpg"title="ex_1427180325586_0.jpg" alt="ex_1427180325586_0.jpg"/>
B、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/35d3b0e6-a3de-45d3-9848-79d50ebf9ca0.jpg"title="ex_1427180210318_0.jpg" alt="ex_1427180210318_0.jpg"/>
C、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/16b21648-4c34-4369-a415-30777a0305b8.jpg"title="ex_1427180283518_0.jpg" alt="ex_1427180283518_0.jpg"/>
D、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/c283ba42-4192-47c9-a098-a0020a142da0.jpg"title="ex_1427180246472_0.jpg" alt="ex_1427180246472_0.jpg"/>
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