試題詳解

75. The beginning of a new menstrual cycle is initiated by the production and release of _________, which occurs when inhibition by _______ ceases.
(A) FSH and LH; GnRH
(B) GnRH; FSH and LH
(C) estrogen and progesterone; GnRH
(D) GnRH; estrogen and progesterone
(E) FSH and LH; estrogen and progesterone