A、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1599919702513b3345359c67a4391afe83a0e3bf6e9a9.png">
B、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/15999197109772499666dfe034e6cac6df0d30381a283.png">
C、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/15999197184158c5ed6cd3c5245d9bfcf1acd3fde1c4d.png">
D、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1599919726648ec541ef9b645474cac2222a838481218.png">