题目

The first day of school our professor introduced himself and challenged us to get to know a new classmate. I stood up to  1   when a gentle hand   2   my shoulder. I turned around to find a wrinkled, little old lady looking up at me with a   3   . She said, “Hi. My name is Rose. I’m eighty-seven years old. Can I give you a  4   ?” I laughed and enthusiastically responded, “Of course you may!” and she gave me a giant squeeze (an act of pressing). “Why are you in college at such a young,    5   age ?”I asked. “I always dreamed of having a   6    experien． (本小题满分7分)选修4—2：矩阵与变换 利用矩阵解二元一次方程组．