问题 单项选择题

商品流通企业管理信息系统是由若干个独立单元组成的,这些独立单元称为子系统,各子系统又可以再被划分为若干个下属子系统,如此不断地由上至下逐层分解系统,使每个子系统的分目标服从于系统整体目标。这种特点体现的是系统的()。

A.功能性 

B.层次性 

C.整体性 

D.稳定性

答案

参考答案:B

解析:本题考查系统的层次性。系统的特点:功能性、整体性、层次性、相对稳定性。

单项选择题
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Britain’s parents have admitted school is harder today than it was when they were kids.A poll(民意测验)of 1,500 parents shows that those with children who have recently sat(参加)A-level or GCSE exams believe today’s exams are harder than the ones they sat at school.One in four thought A-levels were getting harder-compared to just twelve percent who thought they were easier.The figures for GCSEs were more evenly split with 26 percent thinking they were harder and 21 percent believing they were easier.This is the first survey(调查)of the opinion of parents whose youngsters have just sat exams.They told pollsters they believed the higher pass rates in examinations today were due to the youngsters concerned working harder."But another reason given was that they believed today’s youngsters felt there was little chance of success in life without qualification(资格).Parents are seeing standards rise and their children working harder and being smarter than their generation." says Dr Christina Townsend,president of the Ed excel exam board,which commissioned(委托) the survey.The poll,carried out by Opinion Research Business for the exam board,also showed parents supported government plans to allow students to see their marked papers after they had completed their exams.The move(行动)is designed to help them decide whether they should doubt their standard.

59. What do you know about Britain’s school education from the text?

A. Students are burdened with too much homework after school.

B. Students are tired of learning at school.

C. Most students can’t pass the A-level or GCSE exams.

D. Exams are more difficult today and pupils are working harder.

60. The writer’s purpose in writing this text is ____.

A. to show the result of a poll of 1,5000 parents

B. to tell parents that their youngsters are working hard

C. to prove that youngsters are smarter than their parents

D. to request that exams be easier

61. We can infer from the text that ____.

A. the government will take steps to lower the standards of exams.

B. Students were once not allowed to see their marked papers.

C. Parents didn’t work hard when they were at school

D. More parents think A-levels are getting harder and GCSEs are getting easier