25. 胰島素受體(insulin receptor)的分子構造和下列那一激素的受體最類似？ (A)上皮細胞生長因子(epidermal growth factor) (B)類胰島素生長因子- I (insulin-like growth factor- I ) (C)類胰島素生長因子- II (insulin-like growth factor- II) (D)生長激素(growth hormone)