问题 单项选择题

系统分析中有许多分析内容,构成系统分析主体的是

A) 目标分析
B) 功能分析
C) 环境分析
D) 数据分析

答案

参考答案:D

解析: 在系统分析中,首先是目标分析,目标确定后,再进行环境分析、功能分析与数据分析。数据以及数据之间的联系,是对企业一切业务活动的准确和精确刻画,所以可以理解为,对数据的管理就是对企业的管理,而且从数据中可以获得决策信息。因此,对企业运行中所产生的全部数据正确的收集,以及准确地描述数据间的联系及它们的结构,则是建立信息系统时需要最大投入和认真分析的。可以认为,数据分析构成了系统分析的主题内容。故本题选择D。

单项选择题
阅读理解

阅读理解。

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项,选项中有两项为多余选项。

     Is bottled water better for you than tap? Or should you choose vitamin-enriched water? Experts say,

skip it all. None of these products is likely to make you any healthier. Below, we look at four major myths

about the benefits of drinking water.   1   Experts say there's an easy way to judge. If you are not thirsty,

your fluid intake is likely "just right"

     Myth No 1: Drink eight glasses each day.

     Scientists say there's no clear health benefit of drinking so much water a day.   2   "Nobody really

knows," says Dr. Stanley Goldfarb, a kidney expert at the University of Pennsylvania.

      Myth No.2: Lots of water equals healthier skin.

     The body is already 60 percent water.   3   Adding a few extra glasses of water each day has a limited

effect."It's such a tiny part of what's in the body," says Goldfarb." It's very unlikely that one's getting any

benefit."

     Myth No.3:   4      

A more accurate statement may be: Drinking water is a helpful tool for dieters."Water is a great strategy

for dieters because it has no calories," says Madeline Fernstrom of the University of Pittsburgh."So you

can keep your mouth busy without food and get a sense of satisfaction." But water is not magical, she adds.

"Other zero-calorie options such as diet sodas are fine, too."

     Myth No. 4: It's easy to get dehydrated (脱水的) during a workout.

     Dehydration sets in when a person has lost 2 percent of his or her body weight.   5   "It's also obvious

that individuals in hot, dry climates have an increased need for water," says Goldfarb. "But for a walk in

the park, no water bottle is necessary." ?

A. So where does the standard advice come from?

B. But it's unclear whether these changes are clinically significant.

C. So for a 200-pound man, this means losing 4 pounds of water.

D. Drinking extra water leads to weight loss.

E. Drink as much water as you can.

F. So, if you take a 200-pound man, he's 120 pounds of water.

G. But first, how do you know if you're drinking enough water