阅读下列材料， 从每题所给的 A 、B 、C 三个选项中，选出最佳选项。One day, I went to the store to pick up the next week's food. I had something important to do so I had little time and Ihad to put off shopping for Christmas presents until later in the month.
When we arrived there, I gave my son a dollar and asked him to give it to a poor man at the door of the store. We went in and soon filled our cart(购物车) with food. Then we walked towards the self-checkout machines(自主结账收款机). I hated using them. I preferred to chat with the friendly cashiers(收银员), but there were too many people waiting there. As I stopped and waited, though, I heard a man at the machine next to mine saying something angrily. Every time he put his old, wrinkled(起皱褶的) twenty-dollar bill into the machine, it spit out （吐出）the bill. I quickly took a newer twenty-dollar bill out of my wallet and gave it to him. He thanked me with a warm smile and paid for his goods. I told him to keep his money but he insisted(坚持) that I should take his old, wrinkled twenty-dollar bill. I agreed, put it in my coat pocket, and wished him a Merry Christmas.
After checking out, I remembered the saying, "Help one person at a time, and always start with the person nearest you. " I reached into my pocket, smiled, and went outside. Then I gave that wrinkled twenty-dollar bill to another poor person and walked to my car happily.
In my opinion, we should change the world with our love. It is easier than it looks, too. Just start with the person nearest you.
