问题
填空题
数据流图有两种典型的结构形式，它们分别是变换型和 【5】 。
答案
参考答案：事务型
解析： 数据流图中有众多的加工，但必有一个加工是起核心作用的，这样的加工称为中心加工。由数据流图导出结构图的关键是找出中心加工。一般来说，中心加工有两种存在形态，即数据流图有两种典型的结构形式：一种是变换型，另一种是事务型。
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数据流图有两种典型的结构形式，它们分别是变换型和 【5】 。
参考答案：事务型
解析： 数据流图中有众多的加工，但必有一个加工是起核心作用的，这样的加工称为中心加工。由数据流图导出结构图的关键是找出中心加工。一般来说，中心加工有两种存在形态，即数据流图有两种典型的结构形式：一种是变换型，另一种是事务型。
Everyone becomes a little more forgetful as they get older, but men's minds decline more than women's, according to the results of a worldwide survey. Certain differences seem to be inherent in male and female brains: Men are better at maintaining and dealing with mental images (useful in mathematical reasoning<推论；说服> and spatial <空间的>skills), while women tend to excel (擅长) at recalling information from their brain's files (helpful with language skills and remembering the locations of objects). Many studies have looked for a connection between sex and the amount of mental decline (衰退) people experience as they age, but the results have been mixed. Some studies found more age-related decline in men than in women, while others saw the opposite or even no relationship at all between sex and mental decline. Those results could be improper because the studies involved older people, and women live longer than men: The men tested are the survivors, "so they're the ones that may not have shown such cognitive（认知的；认识的） decline," said study team leader Elizabeth of the University of Warwick in England. People surveyed completed four tasks that tested sex-related cognitive skills: matching an object to its rotated（旋转的） form, matching lines shown from the same angle, typing as many words in a particular category (范畴) as possible in the given time, e.g. "object usually colored gray", and recalling the location of objects in a line drawing. The first two were tasks at which men usually excel; the latter are typically dominated(占有主导地位的) by women. Within each age group studied, men and women performed better in their separate categories on average. And though performance declined with age for both genders（性别）, women showed obviously less decline than men overall（全部地）. 小题1:The underlined word in the second paragraph means_________.
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