20 下列激素何者在鳥類孵蛋或藾抱(broodiness)時,其血液中濃度會較平常時提高,最終導致不下蛋?
(A)生長素(growth hormone)
(B)甲狀腺素(thyroid hormone)
(C)黃體激素(luteinizing hormone)
(D)泌乳素(prolactin)

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統計: A(0), B(1), C(6), D(15), E(0) #1187450