Why, do you want me to change the channel?

Why, do you want me to change the channel?

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按照乳牙正常的萌出顺序,20个月的儿童口腔中已萌出的牙有()。A.上下颌乳中切牙B.上下颌乳侧切牙C.上下颌乳尖牙D.D一上下颌第一乳磨牙E

按照乳牙正常的萌出顺序,20个月的儿童口腔中已萌出的牙有()。A.上下颌乳中切牙B.上下颌乳侧切牙C.上下颌乳尖牙D.D一上下颌第一乳磨牙E.上下颌第二乳磨牙A.B.C.D

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