A、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/15403447163201a4ef878995e4970bb182720f4043506.png" alt="上传图片"><br>
B、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/15403447241170543fdb91f6446a9a04460f3c7297dca.png" alt="上传图片"><br>
C、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/154034473470054f87e4654ec4b9c94a51ecf38a19e3f.png" alt="上传图片"><br>
D、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1540344742920de53bf9dce4346948f2f16224f49f9af.png" alt="上传图片"><br>