A、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1516340285267b115a47dda0b4b648a97ea58ae555f41image11.png">
B、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1516340285372c62f514212e84e589dac04bcc4c05685image12.png">
C、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1516340285480353ba57c6ff74a509f5bf5c930987a5fimage13.png">
D、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/151634028563169ac5b4df7ce4ce0bd1ca2c55892f483image14.png">
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