A、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1526097491015cb809501dd6047b09fe63365992213b9.png" alt="上传图片">
B、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1526097500315097c874df4534e41ac6896c13fde0910.png" alt="上传图片">
C、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1526097508900893ad1f570c04ee39d0aba1ea0c5bc60.png" alt="上传图片"><br>
D、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/15260975165745b19366d748b4420b3b8bda899957b6e.png" alt="上传图片">
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