A、<img src="https://learning.mhtall.com/upload/uc_course/10023/335D00F9FF72B0867048451B9F4B2851B6F92590.jpg" alt="">
B、<img src="https://learning.mhtall.com/upload/uc_course/10023/030CC2D56E169828A6621374E870F01C6BBFB4F7.jpg" alt="">
C、<img src="https://learning.mhtall.com/upload/uc_course/10023/1FE32D7591B7A9952BBDB4A23F37ACD3418052F5.jpg" alt="">
D、<img src="https://learning.mhtall.com/upload/uc_course/10023/3F3A396202D8CF483DBB58AE3318C86FC2663E7A.jpg" alt="">
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