A、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1546483460960972d0cabbfb04625a01cd1bbaca1ea8cimage1.png">
B、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/15464834610857a1a2f66b3a4419ab6e89750d196d048image2.png">
C、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/15464834611942f845ef97004442aaae198a496c8c544image3.png">