A、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1506653795238be3a07515a5b4256a1883937bbdce6ad.png" alt="上传图片">
B、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1506653784470aa0413929a054aeb82fd438fd66ff68a.png" alt="上传图片">
C、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/15066538018496b297a475dbe46229f957cfaade73a9e.png" alt="上传图片">
D、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1506653809056c621522d8e204c24a81c9b863f3f6f60.png" alt="上传图片">