A、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1526263939261d748cb2fb461470a94b018a60de56667.png" alt="上传图片"><br>
B、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/152626394838906e5af4fff01446fb0699133f7a1cb0e.png" alt="上传图片"><br>
C、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1526263960412a8e4bd4735ba45cb823cb5b5b924c993.png" alt="上传图片"><br>
D、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1526263969627fae826baee704996b93cc04f9bc3f915.png" alt="上传图片"><br>