21.下列何者爲一般嬰幼兒的牙齒生長順序?
(A)乳齒一牙根
(B)乳齒一恆齒
(C)智齒一牙根
(D)智齒一乳齒
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統計: A(12), B(55), C(2), D(1), E(0) #922526
統計: A(12), B(55), C(2), D(1), E(0) #922526