题目

Hello! My name’s David. I’m 15. I’m a student of No.6 Middle School. I have three friends at school. They are Tom, Bill and Jim. They are all 15 years old. We are friendly to each other(互相). There are four people in my family. They are my father, my mother, my sister Joy and I. My sister is only five. She is lovely(可爱的). We live in Room407. Our telephone number is six seven five four nine eight three two. (   ) 1. What school is David in?               A. No.4 Middle School.  B. No. 6 Middle School.  C. No.5 Middle School. (   ) 2. Who are David’s 14．函数f（x）是定义在（0，+∞）上的减函数，对任意的x，y∈（0，+∞），都有f（x+y）=f（x）+f（y）-1，且f（4）=5．（1）求f（1）的值；（2）解不等式f（m-2）≥2．