A、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1528952760027cca926c680174b6bb59010848558c18fimage29.png">
B、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1528952760095903f9f14a3b74480b870646ef7c4d81aimage30.png">
C、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/15289527601769912c9aaf26a422ea7ed0ca2d22e3f9cimage31.png">
D、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1528952760250bd1debd4a97441338a72a81e3beed9cfimage32.png">