单项选择题在探讨黄金比例与菲波那切数列时，需要将黄金比例化为连分数去求黄金比例的近似值，这时要运用（ ）的思路。 A. 勾股定理 B. 递归 C. 迭代 D. 化归
单项选择题Years after the deadly car accident had occurred, he was still （ ）by images of death and destruction around him.
