短文改错（共10小题；每小题1分，满分10分）
假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号（∧），并在下面写出该加的词。
删除：把多余的词用斜线（＼）划掉。
修改：在错的词下画一横线，并在该词下面写出修改后的词。
注意：1. 每处错误及其修改均仅限一词。
只允许修改10处，多者（从第11处起）不计分。
I often dream of being a teacher. I dream of standing in the platform in the classroom and give lessons to lovely boys and girls. I teach them, play with them, watch them growing up. I am always young when I was staying with them. I know there is not easy to be a teacher. Without enough knowledges, you can never teach good. Besides, you have to make friends with your pupils and take good care of him. Though I am a student now, but I will work very hard to make my dream comes true.
We'll never forget the day which my classmates and I paid a visit to a chemistry factory last week. It was a larger one with nearly 2,000 workers. It looked a garden and we could see colorful flowers, grass and trees anywhere. We also visited some workshops and saw workers worked very hard. We talked with them and learned a lot of. We understood them further. On the way home we felt tiring. We all thought that we had a very good day. We real hoped that we could get more chances of leave the school and learn social experience.
On Children's Day last year, our city held an interested activity, in which children and their parents play the rich and the poor. In the dinner, the rich could have more delicious food, but the poor could only have breads with porridge(粥). Parents both hoped to have the dinner for the poor with the children. They hoped that their children could be taught the lesson from the dinner. Now many people on earth don't have enough food and clothes. Every day only one half the world could enjoy enough food. The activity was held make the families understand the differences from the poor and the rich and also make the parents know that too much material life won't always do good to the children.
May I have you attention please? I have a little things to tell you. When you have a class here in the language lab, please be here a little early. Change your shoes before enter the lab. Don't bring anything here except your text books. When you are into, please don't touch these machine without permission. Always do as the teacher tell you to. In class you should only speak the English, not Chinese. Recorders can be used make a copy of the listening materials. When class over, turn off your machines and leave the lab one by one.
One cold day, an aged lady was sent for her doctor. When he came, she tells him that her right leg was very sore(酸痛)in the knee. The pain sometimes was bad enough to make it walking difficult. She asked him how the trouble could be because she had never before suffered some similar discomfort. After making a careful examination, the doctor said, “You are in a very bad state of health for a woman of your age. I think the trouble in your right knee is just matter of old age. We get diseases as we get old. The trouble will clean up on spring!” “Nonsense, doctor!” she said, “My left knee is perfect, and it is exactly same age as my right.”
I passed all the other course that I took at my university, but I could never pass botany. This was why all botany students had to spend several hours a week in a lab look through a microscope at plant cells, and I could never see through a microscope. This was used to make my professor angry. “I can’t see everything, ” I said. Then he began patient enough to explain how to see through it, but I still couldn’t make it. At last we tried it with every adjustment of the microscope known to men. With my pleasure, I saw something and drew it quickly on the paper. “What’s that?” my professor asked. “That’s what I saw.” I answered. “No, you don’t!” he shouted, and he bent over and looking into the microscope. “That’s your eyes! You’ve fixed the lens so that it reflects! You’ve drawn your eyes!”