A、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1526006617692a22410ae711440919ca8991c11276e48image28.png">
B、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/152600661777491ea046b34e44e26a24ae513b74a114fimage29.png">
C、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/152600661787955edd83098214aafad212274bac8704fimage30.png">
D、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/15260066179756cc7364b4d934930a8b48b2b3f461323image31.png">
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