A、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/15077869342967f9f8a154663492c858af48ad5d77bac.png" alt="上传图片">
B、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1507786942246652ed00dae064f459113f1f3c1db08c8.png" alt="上传图片">
C、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1507787011474d853521430b34bc7b69285588cd5fe27.png" alt="上传图片">
D、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1507787043975d62c4ae29c6a4998a2d66cfc8bb154f4.png" alt="上传图片">