题目

阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。 I lost my sight when I was four years old by falling off a box car andlanding on my head. Now I am twenty-two. I can vaguely(模糊地) remember thebrightness of sunshine and what red color is. It would be wonderful to seeagain, but a calamity can do strange things to people. It occurred to me the other day that I might not have come to love lifeas I do if I hadn't been blind. I believe in life now. I am not so sure that Iwould have believed in it so deeply, otherwise. I don't mean that I wouldpr某市出租车计费标准如下：行程不超过3千米，收费8元；超过3千米部分，按每千米1.60元计算．求车费P和行驶路程s之间的函数关系式，并分别求出当路程为2.5千米和7千米时应付的车费．