A、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/15287000074335aee70758d254ea1907cacf61aa33f72image17.png">
B、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1528700007499785c284896ed450592c10a87c73f7e23image18.png">
C、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/15287000075808e93d4b08c3d4ac4be1af89340557714image19.png">
D、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/15287000078455bde713d9a1f49d697ef65e2768e8535image20.png">
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