A、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1526006620367e65a565993cd452391b6bfbce1504303image52.png">
B、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1526006620463aeee76842fb54a14a2de0a08f21e2eb5image53.png">
C、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/152600662056350eca59e23534b67a52a3f0a0d1b5b2cimage54.png">
D、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/15260066206443288d1b2ab144181b2f59e3cc9896017image55.png">
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