A.red
B.brown
C.white
D.black
替牙he期间上下牙弓的咬合关系发展由()。A.中性he关系→近中he关系B.远中he关系→中性he关系C.近中he关系→中性he关系D.中性he关系→远中he关系E.持续中性he关系
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