下面关于函数依赖的叙述中，不正确的是( )。A．若X→Y，Y→Z，则X→Z B．若X

阅读短文，选出最佳答案。

I Don’t Think I Wrote Wrong

Lao Yang was born in a small town. He liked reading when he studied at school. He thought the writers were respected(尊敬) and could get a lot of money. He wrote a lot of stories and posted them to the editorial departments (编辑部) but didn’t receive any answers.

Now he works in a factory. He’s busy at work. When he’s free, he always reads something. He always remembers he hoped to be a writer when he was young. One day, Xiao Ping, his ten-year-old daughter, came back. She looked worried and didn’t eat anything. She said Miss GAO, her Chinese teacher, told them to write a solicit article(征文) “My Father” that evening. But she did not know what to write.

“That’s easy,” said Lao Yang. “Let me help you.”

Then he sat down to write the solicit article at once. He easily finished it on time. He was sure Miss GAO would like it. But one afternoon he asked his daughter if the article had been chosen to post to the editorial department.

“My teacher said your article digressed from the subject(离题),” said the girl.

“I don’t think so,” Lao Yang shouted angrily. “I described(描写) just my father!”

1. Lao Yang wrote a lot of stories because _______.

A. he likes reading           B. he learned much at school

C. he wanted to be a writer    D. he wanted to help others

2. Lao Yang posted the stories to the editorial departments, _______.

A. and he got a lot of money         B. and he became a famous man

C. and he was respected          D. but he failed

3. As _______, Lao Yang decided to help his daughter.

A. he was a writer                B. he was free  

C. he wanted to realize his ideal     D. he wanted to make his daughter happy

4. Lao Yang hoped _______.

A. his article could surprise the teacher     B. his article could be chosen

C. the children could like his article        D. everyone could soon know him

60. Lao Yang’s solicit article digressed from the subject _______.

A. because he couldn’t write it at all       B. because he didn’t know his father well

C. because it was too bad to be chosen      D. just because he described his father

下列程序：

假设矩阵A、B的初值已设置好，矩阵C初始为0，各矩阵均以页为单位连续存放。又假定一个整数占一个字，代码以及变量i、j和k存放在其他页面里，并且存取变量i、i和k时不存在缺页问题。主存初始为空，在请求分页存储管理中，页面置换算法为FIFO。

当作业分配两个页面，每个页面为500字，给矩阵A、B和C使用。问执行上面程序时，缺页次数是多少当执行完程序时，留在内存的两个页面各属于哪些矩阵

（）是采用造型手段塑造视觉形象的众多艺术类型的总称。

A.音乐

B.舞蹈

C.影视

D.美术

采暖系统干管安装坡度为0.003时的应用范围的是______。

A．供回水管道

B．汽水同向流动管道

C．汽水逆向流动管道

D．凝结水管道

大黄酒制后能引药上行，能在上焦产生清降热邪的作用。