阅读理解。 I found a website that has changed my life. The website is wishuponahero.com and it is all about people helping others, not expecting anything in return. I am a single mom with a son. My son's 12th birthday was on October 29th, 2007. Knowing that I didn't have money to buy him a birthday gift had broken my heart. So, I decided to post a wish on wishuponahero. com for people to send my son birthday cards. Many cards just started coming in and my little son was very excited and this went on for about three weeks. The smile on his face and the sparkle (闪光) in his eyes brought me to tears. Then, at the end of November, he started thinking about Christmas and he already knew that there would not be a tree for him because we didn't have enough money. However it didn't matter to him. All he talked about was how much he wanted to make other children smile. So he decided to earn money to buy Christmas cards and send them to other children from poor families. My son went out daily and raked leaves and walked some dogs to make money. Not only did he buy cards, but he also made enough money to buy all the stamps and lollipops to send with the cards. He sent out about 100 cards. Doing this brought him the same smile and sparkle in his eyes as the birthday cards that he received did. 1. The single mother posted a wish on wishuponahero.com because _____. [     ] A. she wanted to send her son a card on the website B. she liked the website very much C. she was too poor to buy her son a birthday present D. she thought her son would like the website very much 2. What did the son do for other poor children on Christmas? [     ] A. He sent them his own Christmas tree. B. He earned money to send them cards with candy. C. He raked leaves and walked dogs for them. D. He made some lollipops to make them smile. 3. Why was there sparkle in the son's eyes at the end of the story? [     ] A. He thought of his birthday cards and other good people. B. He earned a lot of money by himself. C. He thought of what his mother had done for him. D. He was glad and excited to help other poor children. 4. What can we conclude from the story? [     ] A. Surfing the Internet is of great use. B. One should take care of his or her children. C. People can ask for help from wishuponahero.com. D. Learning to give makes one's life more meaningful.