A、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/15282749227007346eb2027a140038c21104835503cc7image51.png">
B、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/15282749228451852baf0aa1646688889345cb98dac34image52.png">
C、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/15282749229206e2deb0381a544a49e70ae6b5b4feba7image39.png">
D、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/152827492299009d320ec2b8742368a7ccbe251569be5image13.png">
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