阅读理解。根据短文内容，判断正(T)误(F)。
I am an English girl. My name is Mary. I'm twelve. My dad and mom are English teachers. I have a
brother (哥哥). His name is Tom and he is thirteen years old. We are in China now. We are in Beijing
No. 4 Junior High School. Tom is in Class 4, Grade 7 and I am in Class 9, Grade 7. I have a dog. My
dog looks strong. It has a big mouth and two big black ears. We have many(许多) Chinese friends
here. They are good.
( ) 1. Mary comes from the U. S. A.
( ) 2. Mary and Tom are in the same class, but they are in different grades.
( ) 3. Mary's dog's mouth and ears are big.
( ) 4. The dog's ears are white.
( ) 5. Tom and Mary have many friends in China.