阅读理解

       This is a photo of Mr. Green's family. The man in the photo is Mr. Green, the father. The woman is

the mother. They have two daughters. The girl behind(在……后面)Mr. Green is Mary. She's fourteen.

The girl behind Mrs. Green is Jane. She is eleven. Mary and Jane are in the same(同一的) school, but

not in the same grade(年级). Mary is in Grade Three. Jane is in Grade One. They are good students.

1. There are _______ people in the picture.

A. five  

B. three  

C. four  

2. Mary is behind _______.

A. Mr. Green    

B. Mrs. Green    

C. Jane    

3. Mr. And Mrs. Green have ______.

A. one boy and one girl    

B. two boys    

C. two girls              

4. Jane is ______ sister.

A. Mr. Green's          

B. Mary's      

C. Mrs. Green's        

5. How old are Mary and Jane?

A. Eleven and thirteen.

B. Fourteen and eleven. 

C. Eleven and fourteen.  

一般说来，在信息系统开发中应用______的技术比应用正在探索的技术更有助于系统开发的成功和减少风险。