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问题：
[单选题]以下关于激素的叙述，不正确的是（ ）。
A、雄激素是合成雌激素的前体
B、孕激素是雄激素的前身
C、雌三醇是雌二醇与雌酮的代谢产物
D、孕二醇是黄体酮的主要代谢产物
E、卵巢激素主要在肝代谢
参考答案：
D
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