A、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/15289536259114958701f253d4ecca169615cfc8a792cimage3.png">
B、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1528953626002c6b54241410944718b32c6193538c282image4.png">
C、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1528953626085c06ee03b7ff746c4aabb312a942b2cd3image5.png">
D、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1528953626170e4cc02a431e04fbdaaf4f8a398e16cf3image6.png">
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