函数y=$\sqrt{x-5}$中，自变量x的取值范围是（　　）

    Bill,a 13-year-old boy, thought he had grown up to be a man. But his parents told him, "You won't be a real man until you begin to think about helping others."
    One moming, his parents gave him some money to buy some milk. Outside a shop he saw a homeless old~man who looked very sick. Bill went to him and asked. "what's wrong with you?"
    The old man answered, "I'm hungry,I haven't had any food for two days".
   “Let's go to the restaurant."
    When they got there, Bill asked the waiter to bring out bread and coffee to the old man. The old man finished the meal quickly. Afier the waiter took away the plate and the cup, the old man said, "Sorry for giving you too much trouble. I'm fine now. I'Il never forget your kindness! You're a very good young man."
    Bill was happy when he heard this. Just when he wanted to pay for the meal, the waiter came.To their surprise, Bill and the old man leamed that their food was free because it was the birthday of the boss, and they were the first customers that day.

下面这段文字中的三句话，各有一处语病，请加以修改。

    ①《人民日报》表示，提升人们的幸福指数已成为官员的共识。②评论家说，对“幸福”口号的宣传表明，政府认识到了民生问题。③巴黎政治学院高级研究员让·菲利普·贝雅说，通过承诺提供幸福，使中共希望向人们表明，自己关心他们的问题。