A、1
B、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1528952758644fa12c615e10c404a844aeb02c8c9142bimage11.png">
C、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1528952758726fbd73f2991b14096871d326851006f44image12.png">
D、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/152895275880261546fbd9f1c4e53bc69df3f462422dbimage13.png">