31. In mammals, gestation is defined physiologically as the time from _____ to birth.
(A) fertilization
(B) implantation
(C) blastocyst formation
(D) ovulation

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統計： A(12), B(7), C(2), D(5), E(0) #3321054

詳解 (共 1 筆)

#6319531
這題就是考定義 直接背就好
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