若关于x的方程x²﹣4x+k=0的一个根为2﹣$\sqrt{3}$，则k的值为（　　）

    Hello! I'm Linda. I have a good e-friend. Her name is Zhang Yun. Her English name is Betty. She is a Chinese girl, but she lives in the UK with her parents. Her father is a doctor and her mother is a teacher. She is ten years old. She call me big sister. She is good at English. She likes Chinese and I also like Chinese. She likes singing and playing basketball. This is my good e-friend. Do you want to know more?

古诗文默写。
①____，衣冠简朴古风存。（《游山西村》）
②绿树村边合，____。（《过故人庄》）
③安得广厦千万间，____，风雨不动安如山！（《茅屋为秋风所破歌》）
④《答谢中书书》写山水相映之美的语句是____，____。
⑤《浣溪沙》中抒发作者老当益壮、奋发进取的思想感情的句子是____？____。____。