一个四棱锥和一个三棱锥恰好可以拼接成一个三棱柱.这个四棱锥的底面为正方形,且底面边长与各侧棱长相等,这个三棱锥的底面边长与各侧棱长也都相等.设四棱锥、三棱锥、三棱柱的高分别为,,,则( )
_____ is known to everybody, Taiwan is part of China. We must unify it.
---I rang you yesterday afternoon. A man answered, but I didn’t recognize the voice. --- Oh, it ____ my uncle. He was in my room then.
Mrs.Black took the police back to ____ place ____ she witnessed the robbery.
--- You couldn’t have chosen any gift better for me. ---_______. That’s all right. I will give you a better one next time. I’m sorry I can’t let you be satisfied. I’m glad you like it so much. You have a gift for music, don’t you?
There was_____ time when women had no right to vote, could not to to_____ university or choose their jobs.