阅读理解。 On Thanksgiving Day, a teacher asked her class of first-graders to draw a picture of something they were thankful for. She thought that these children from poor families actually had little to be thankful for. And she found most of them drawing pictures of flowers or tables with food. The teacher was very surprised to see the picture Douglas handed in. It's a hand, a hand. But whose hand? The class were very interested in the strange picture.'I think it must be the hand of God that bring us food,' said one child, 'A farmer,' said another,'Because he grows beautiful flowers.' Finally when the others were at work, the teacher went over Douglas' desk and asked whose hand it was. 'It's your hand, Teacher,' she said quietly and shyly. She remembered that she had often taken Douglas, a dirty lonely child, by the hand while having a class break. She often did that with the children. But it meant so much to Douglas. Perhaps this is everyone's thanksgiving, not for the material things we get, but for the chance, in whatever small way, to give to others. 1. When did the story happen? A. On Christmas Day. B. On Teachers' Day. C. On Mother's Day. D. On Thanksgiving Day. 2. Why did Douglas draw the picture? A. He was good at drawing it. B. His teacher asked him to draw it. C. He wanted to show his thanks to the teacher. D. He hoped to get a prize in drawing. 3. What do you learn about Douglas from the passage? A. He was a lonely child. B. He was very active in class. C. He always kept his hand clean. D. He often answered questions loudly. 4. According to the passage, which of the following is an opinion (意见；主张；看法), but not a fact? A. The teacher went over Dauglas' desk and talked to him. B. Different people show their thanksgiving in different ways. C. The teacher often took Douglas by the hand after class. D. Most of the students were drawing the pictures of flowers or tables with food.