短文改错。Hi, I'm Jack. I study at Beijing Su
题型：改错题
问题：
| 短文改错。 |
| Hi, I'm Jack. I study at Beijing Sunshine Secondary School. I'm in Class 1, Grade 7. I am come from England . 1. I lives on Spring Road. I'm clever at Maths. I have a cousin. 2. He is not very good at singing and dance. But he loves 3. listening to music. He has lots of CDs. He often listen 4. to them at the weekend. He also likes chatting with his friends. Would you like to make friends with he? 5. |
积上获得n个光子的能量．求当人距离光源多远时将看
不到光源．