A、<img src="https://learning.mhtall.com/upload/uc_course/10023/CA8D802FB0F27BBDFAED8B17A450627E06DE2964.jpg" alt="">
B、<img src="https://learning.mhtall.com/upload/uc_course/10023/698F00E769149947A91C1D87F4D8642B6AACF800.jpg" alt="">
C、<img src="https://learning.mhtall.com/upload/uc_course/10023/95EC91058AE6C64B47F5485FF1042BFA31CE8E59.jpg" alt="">
D、<img src="https://learning.mhtall.com/upload/uc_course/10023/DF22EB59F009DF802C9C45F6385173C6EAA6D03B.jpg" alt="">
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