A、<img src="https://learning.mhtall.com/upload/uc_course/10023/B56872A255F5E534815482A1B31A3BAC5C02C929.jpg" alt="">
B、<img src="https://learning.mhtall.com/upload/uc_course/10023/1358E046A6B38167883373DCA3117AEA796AD27E.jpg" alt="">
C、<img src="https://learning.mhtall.com/upload/uc_course/10023/07BBB709732C5FB4847964A8E01FBF1CAABD6B75.jpg" alt="">
D、<img src="https://learning.mhtall.com/upload/uc_course/10023/FD7DF75C5419BF89673489562B065C928027AB98.jpg" alt="">
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