15. A physician finds that a nine-year-old male patient is entering puberty much earlier than usual. Such a condition is most likely the result of a tumor in the_____ .
(A) hypothalamus, producing elevated levels of testosterone
(B) anterior pituitary, producing elevated levels of testosterone
(C) testes, producing elevated levels of estrogen
(D) anterior pituitary, producing elevated levels of gonadotropins

答案：登入後查看
統計： 尚無統計資料