A、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1545643588491d01b0c6629dd49e6bee24266e8b2b5d0.png" alt="上传图片"><br>
B、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/15456436102160e83dd9ae95c42e399c87d7184a17130.png" alt="上传图片">
C、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1545643689934af74b4fd34b64ce2a77e3bcb1a328964.png" alt="上传图片"><br>
D、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1545643672793a3242c255fb44c04ab7b7f75af79aba4.png" alt="上传图片">
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