5.进入青春期出现第二特征的原因是 . A.垂体分泌促性腺激素 B.垂体分泌性激素 C.睾丸和卵巢分泌促性腺激素 D.睾丸和卵巢分泌性 Template




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tomski5.进入青春期出现第二特征的原因是 . a.垂体分泌促性腺激素 coloring