28.下列何者為最常見造成異卵雙胞(dizygotic twins)的原因?
(A)高齡產婦(advanced maternal age)
(B)人工生殖技術(assisted reproductive technology)
(C)多產次的婦女(high parity)
(D)種族(racial predisposition)
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統計: A(17), B(203), C(3), D(1), E(0) #1740469
統計: A(17), B(203), C(3), D(1), E(0) #1740469