A、1
B、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/15288736917633122fe020c8d46a1a6bb3d16bb0a66ecimage31.png">
C、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/15288736918369a2c0c31cfad4636817b334b4ec13b4dimage32.png">
D、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1528873691896419dfb3d30064b409dde2987fc5a8896image33.png">