已知各面均为等边三角形的四面体的棱长为2，则它的表面积是______． 发布时间：2017-05-14 01:30 │ 来源：www.tikuol.com 题型：填空题 问题： 已知各面均为等边三角形的四面体的棱长为2，则它的表面积是______．
题型：填空题 短文改错。When my daughter Kate and his friends wanted to make a wooden box and sell them, I was glad that they decided to earn money instead of ask their parents for it, so I agreed to lend them hand. I gave them many carpentry (木工的) lesson, and they all seemed capable (有能力的) and carefully with my tools. Because they worked behind a garage, the house is quieter than it used to be. They were learning how to use money in a usefully way, and I could tell that they felt be proud of themselves. 1. _____2. _____3. _____4. _____5. _____6. _____7. _____8. _____9. _____10. _____ 查看答案