阅读理解。

     Hello! I am Julia. My mom and I are from the U.S.A. . I am thirteen now. I'm in Class 6, Grade 7. Lingling is my friend.

She is from Yunnan. Her QQ number is 52656523. We are in the same school. She is in Grade 7, too. But she is in Class

7. She is fourteen. My mom is Nancy. She is a teacher in my school. She has a nice car.   

1. How old is Julia?

A. 13       

B. 14         

C. 15

2. Lingling's QQ number is        ?

A. 52656523    

B. 52655633  

C. 52655623

3. Lingling is in        ?

A. Class 6, Grade 7.      

B.Class 7,Grade 7.  

C.Class 7, Grade 6.

4. Where is Nancy from?

A. China            

B. England            

C. the U.S.A.

5. Which is RIGHT(哪一项是正确的)?

A. Lingling is from the U.S.A.        

B. Nancy has two cars.  

C. Julia, Lingling and Nancy are in the same school.

下述关于管线综合原则，错误的表述是（）。

A.无压让有压

B.低压管避让高压管

C.大管优先

D.消防水管避让冷冻水管