问题
填空题
若一个三角形的三边a、b、c满足a2+b2+c2-ab-bc-ca=0，则该在三角形为（ ）。
答案
等边三角形
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若一个三角形的三边a、b、c满足a2+b2+c2-ab-bc-ca=0，则该在三角形为（ ）。
等边三角形
| 下列各句均有一处错误，请找出并改正。 | |
| 1. Is she make a cake now? 2. I thank Mr Hu can I help you doing it. 3. You should read it more one time. 4. Please write down his address and postal codes. 5. There are some chess in the teacher's office. 6. The boy kept to ask the same question again and again. 7. That man comes from Canadian. 8. The teacher made us read English every morning. 9. They are going to having a match. 10. Don't read so loud. | _____ _____ _____ _____ _____ _____ _____ _____ _____ _____ |