A、 <img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1517795234900cadd7bba123b43b5aa185ef60c12048cimage57.png">
B、 <img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/151779523497238751a9e8eac4cca9a59d3edc50d0768image58.png">
C、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1517795235041b141e6e48fa6499eab260a6e69f3f0c6image59.png">
D、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/15177952351212f277d79274142a5afb604a3ddb36ceaimage60.png">
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