A、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1621483691771_c413f226aa194c74aca935cfec7c1ff6.png">
B、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1621483693954_a6f6839b7ff240608143b2c14269e0e6.png">
C、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1621483695891_396dd8f07fe94ceb8dad649b36fdd90c.png">
D、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1621483698121_ed8f5953aca9457c816aa97b4d762c47.png">
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