A、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1526265958533b4ddda22feb94149ab854b6ef9debaf8.png" alt="上传图片"><br>
B、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/15262659704421d2ab4b2ae254aaa9de629d15edeb61a.png" alt="上传图片"><br>
C、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/15262659799108fb1617cc5d5436480c2b08d5768c46b.png" alt="上传图片"><br>
D、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1526265990569a0c05826dfee4ad09b4a273a21a196ac.png" alt="上传图片"><br>