问题 单项选择题

信息系统设计方案中的操作界面部分,特别是输入界面设计方案需要征求信息处理技术员的意见。在如下设计理念中,______是不正确的。

A.用户在输入框中输入信息并按Enter键后,光标应自动移到下一输入框

B.性别、学历等信息的输入可采用单选按钮或下拉列表框形式

C.为了美观起见,输入框中的信息应要求用户用宋体居中输入

D.对用户输入的信息应尽量立即自动进行有效性校验,并提示错误

答案

参考答案:C

解析:信息系统的操作界面是系统操作员常用的界面,设计时除了要体现系统功能的完整性外,还应符合人们的操作习惯。特别是输入界面,那是信息处理技术员需要大量操作的界面。偶尔操作的人员对界面的方便性要求不高,但对于大量操作的人来说,不方便的操作界面是很麻烦的,甚至是痛苦的,也会导致输入错误增多。
输入界面中一般会有多个输入框。由用户移动光标,再逐框输入是很麻烦的,也容易出错。系统应尽量帮助用户实现光标自动定位。
对于性别的输入,采用单选按钮很方便,甚至采用默认值后,会有一半多的情况无需输入。对于学历输入,采用下拉列表框(也可以用单选按钮)是方便的,减少了输入操作量,加快了操作速度,减少了出错的可能。
要求用户输入信息后,再进行居中对齐,并改用宋体显示,这是没有必要的。一般按默认的左对齐方式、默认的字体输入就可以了。即使为了美观,也不应该让用户输入时排版,而应由程序自动设置好。
对有些输入信息可以用编程办法进行有效性校验,例如事先规定数值的范围、输入字符的限制、与其他字段信息的匹配等,发现错误后立即提示错误,这样可以减少系统输入的出错机会,对操作员和信息系统的成功运行都十分有利。

阅读理解

What do you want to be when you grow up? A teacher? A doctor? How about an ice-cream taster?

Yes, there really is a job where you can get paid to taste ice cream. Just ask John Harrison, an “Official Taste Tester” for the past 2l years. Harrison’s job has been responsible for approving(批准)large numbers of the sweet ice cream – as well as for developing over 15 flavors(味道).

Some people think that it would be easy to do this job; after all, you just have to like ice cream, right? No – there’s more to the job than that, says Harrison, who has a degree in chemistry. He points out that a dairy or food-science degree would be very useful to someone wanting a job in this “cool field”.

In a typical morning on the job, Harrison tastes and grades 60 ice-cream samples. He lets the ice cream warm up to about 12oF. Harrison explains, “You get more flavor from warmer ice cream, which is why some kids like to stir it, creating ice-cream soup.”

While the ice cream warms up, Harrison looks over the samples and grades each one on its appearance. “Tasting begins with the eyes,” he explains. He checks to see if the ice cream is attractive and asks himself, “Does the product have the colour expected from that flavor?” Next it’s time to taste!

Continuing to think up new ideas, try out new flavors and test samples from so many kinds of ice cream each day keeps Harrison busy but happy – working at one cool job.

小题1:What is John Harrison’s job?

A.An officer.

B.An ice-cream taster.

C.A chemist.

D.An ice-cream producer.小题2:According to John Harrison, what is useful to get a job in “cool field”?

A.To just like ice cream.

B.To find out new flavors each day.

C.To have new ideas every day.

D.To have a degree in food-science.小题3:What does Harrison do first when testing ice cream?

A.He smells it.

B.He lets it warm up.

C.He tastes its flavor.

D.He examines its colour.

单项选择题