(二) 科学技术以前所未有的速度和规模迅猛发展，增强了人类改造自然的能力，给人类社

对关系数据库来讲，下面______说法是错误的。

A) 每一列的分量是同一种类型数据，来自同一个域
B) 不同列的数据可以出自同一个域
C) 行的顺序可以任意交换，但列的顺序不能任意交换
D) 关系中的任意两个元组不能完全相同

（）适用于所有定级类型和地区。

A.叠置法

B.地块法

C.网格法

D.多边形法

E.估算法

阅读理解

     What separates me from everyone else? The difference is not what clothes I wear or the music I listen

too, but what I feel inside.

     Ever since I was young, I have loved professional wrestling. I woke up every Saturday to watch my

favorite "Superstars." As I grew older, I got a lot of flak for watching this "fake" sport. My peers would

laugh at me for following what was called a "man's soap opera." So, I put my love for wrestling on the

shelf. Like everyone else, I wanted to be associated with the cool clique. I yearned to be invited to the

parties of the in-crowd and hang out with the popular kids. I became pretty successful. Although my

Friday evenings were busy with parties, I would still wake up early Saturdays to watch wrestling. It

wasn't until freshman year that I realized I wasn't being myself.

     That year, I tried many new things and activities and made new friends. In my town, football was the

sport, so I decided to play football, thinking it might give me a head start in popularity. The team started

with 48 athletes. At the end, there were 14 of us left. I stuck it out not because I liked it, but because I

am not a quitter. That long season taught me a lesson: I wasn't a football player. More importantly, it

taught me to be myself.

     After that season, I went back to being a wrestling fan. I watched it religiously, no matter what insults

were thrown my way. I came across a quote: "Don't Dream It, Be It." When I read this, my friend Dan

had the same idea I had.

     "What if we build a wrestling ring?" we asked. We acquired the necessary wood and equipment for

its construction. The following weekend, we met at his house. We saw our dream in a pile in his

backyard. We worked from dawn to dusk to build our great establishment. By Sunday night, our

mission was complete.  Our hard work (combined with a little creativity) had paid off. We had a real

ring. We decided to hold an "event." We practiced for hours, trying to improve every aspect of our

wrestling ability. The date was May 24th. Our show had a start time of 9: 00 p.m. To our surprise, about

one hundred family, friends and fans showed up to support us. It was the most important night of my life

and a complete success. Since that time, we have held five shows with as many as two hundred and fifty

people turning out. We continue to live this dream. We accomplished what we set out to do. We are

now well known throughout school. When  I walk down the halls, I am respected by my peers. Some are

the same peers who ridiculed me for watching wrestling when I was younger. When they approach me,

they often say, "Good match, Chris." I humbly say, "Thank you," knowing I did something I believed in.

     As my senior year winds down, I'll remember all of my high school memories. But what will stick out

most is the memory that I did something I loved, despite what everyone said or thought. I accomplished

my goal ... I lived my dream.

1. What makes the writer different from the others is __________.

A. the different sports he loves        

B. the different clothes he wears and the different music he listens to

C. that he is younger than the others.    

D. the different ideas he has

2. What does the underlined sentence in Paragraph mean?

A. I practiced wrestling secretly in my spare time.    

B. I put the clothes for wrestling on the shelf.

C. I decided to quit practicing wrestling.            

D. I began not to watch wrestling on TV.

3. When the writer was a freshman, he ___________.

A. knew he couldn't be a football player.    

B. realized he was being himself.

C. became very sociable.                

D. built a wrestling ring.

4. The writer built the wrestling ring in order to ________.

A. play football there    

B. make his dream realized  

C. be a professional player    

D. have parties there.

5. What is the writer's attitude towards his experience in high school?

A. Optimistic    

B. Pessimistic    

C. Doubtful    

D. Surprised

患儿，4岁，发热，呕吐5小时入院，神志不清，口唇发绀，对诊断流行性脑脊髓膜炎有帮助的临床表现是（）。

A.口唇疱疹

B.脑膜刺激征

C.皮肤瘀点瘀斑

D.反复惊厥

E.抽搐，昏迷

第二次世界大战期间，美国政府的战时______制度，调整食物结构政策以及______的社会性措施为公共营养的发展奠定基础。