A、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1490852676160b3fd741d53f94c6aa65526bfb8cda929image20.png">
B、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1490852676201d82a0655d43d4a06acfb2aa1cbdf194dimage21.png">
C、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1490852676258369e3193365b43e19b1e251bd2b9fb74image22.png">
D、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/149085267630644a741085eab4b9ebd3ef261735c673fimage23.png">
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