阅读短文，判断正(T)误(F)。

      Hello, I am Mary. My father is Mr. Smith. He is a businessman. My mother is Mrs. Smith. She is a doctor.

I have two brothers, John and Tom. John is twenty-four years old. He is a bus driver. Tom is eleven. I am

thirteen years old. We are students. We love my family.

( ) 1. My name is Mary Smith.

( ) 2. My family has four people.

( ) 3. My father is a doctor.

( ) 4. Tom is a student.

( ) 5. John is older than Tom.

关于建筑面积、使用面积、辅助面积、结构面积、有效面积的相互关系，正确的表达式是（）。

A.有效面积=建筑面积-结构面积

B.使用面积=有效面积+结构面积

C.建筑面积=使用面积+辅助面积

D.辅助面积=使用面积-结构面积