A、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/152764774625664cd580ec6ca4d75869cb80602b3ad4aimage22.png">
C、1
D、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1527647746361e20776badf444e4cb3adde2901acc633image23.png">
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