阅读理解。

     Read the clues (线索): 

     1. The man whose name is Mr Read in the red house likes running. 

     2. Mr Smith swims. He doesn't live in the yellow or white house. 

     3. Mr Black is a tennis player. He lives in the yellow house.

     4. Mr Green does taiji.

     5. Mr Read doesn't have a racket.

1. Who lives in the red house?

A. Mr Green.

B. Mr Smith.

C. Mr Read.

D. Mr Black.

2. What is Mr Read's favorite (最喜欢的) sport?

A. Running.

B. Swimming.

C. Playing tennis.

D. Taiji.

3. Who lives in the white house?

A. Mr Smith.

B. Mr Green.

C. Mr Read.

D. Mr Black.

4. Which is Mr Smith's house?

A. The white house.

B. The yellow house.

C. The red house.

D. The blue house.

5. Who likes playing tennis?

A. Mr Smith.

B. Mr Green.

C. Mr Read.

D. Mr Black.

在C++语言中，打开一个文件就是将这个文件与一个什么建立关联

A．流

B．类

C．结构

D．对象