A、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1511857095953b387a8c9e1744315bc61a3111201ce1a.png" alt="上传图片">

B、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1511857101925c4af90497b9a4e6d85b3cc75bca11b7e.png" alt="上传图片">

C、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/15118571080379b6583d69615416c81441aea9af367c8.png" alt="上传图片">

D、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/15118571134712c6eb006c4cf4c6bbed2400ae9cb606a.png" alt="上传图片">