【单选题】
设D=<V,E>为有向图，则有___。
A. E V×V
B. E V×V
C. V×V E
D. V×V=E
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答案
A
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相关试题
【单选题】
给定下列序列，可构成无向简单图的结点度数序列的是___。
A. （1，1，2，2，3）
B. （1，1，2，2，2）
C. （0，1，3，3，3）
D. （1，3，4，4，5）
【单选题】
设D=<V,E>为有向图，V={a,b,c,d,e,f}，E={<a,b>,<b,c>,<a,d>,<d,e>,<f,e>}是___。
A. 强连通图
B. 单向连通图
C. 弱连通图
D. 不连通图
【单选题】
设|V|>1，D=<V,E>是强连通图，当且仅当___。
A. D中至少有一条通路
B. D中至少有一条回路
C. D中有通过每个结点至少一次的通路
D. D中有通过每个结点至少一次的回路
【单选题】
设{a,b,c,d}，则与V构成强连通图的边集为___。
A. E1={<a,d>,<b,a>,<b,d>,<c,b>,<d,c>}
B. E2={<a,d>,<b,a>,<b,c>,<b,d>,<d,c>}
C. E3={<a,c>,<b,a>,<b,c>,<d,a>,<d,c>}
D. E4={<a,b>,<a,c>,<a,d>,<b,d>,<c,d>}
【单选题】
实现中华民族伟大复兴的中国梦，必须弘扬中国精神，中国精神是指___
A. 艰苦奋斗的创业精神，自力更生的自强精神
B. 追求卓越的进取精神，勇攀高峰的奋斗精神
C. 无私奉献的忘我精神，乐观豁达的包容精神
D. 以爱国主义为核心的民族精神和以改革创新为核心的时代精神。
【单选题】
两千多年前的《诗经》提出“夙夜在公”，西汉的贾谊提出“国而忘家，公而忘私”，宋代的范仲淹提出“先天下之忧而忧，后天下之乐而乐”，明代的顾炎武提出“天下兴亡，匹夫有责”等，这些都体现了中华民族传统美德中___。
A. 爱国奉献，以天下为己任的内容
B. 乐群贵和，强调入际和谐的内容
C. 勤劳勇敢，追求自由解放的内容
D. 求真务实，敬重诚实守信的内容
【单选题】
做新时期忠诚坚定的爱国者，除了需要培育强烈的爱国情感、保持民族自尊和自信，努力学习和工作、以实践行动和贡献履行爱国义务外，还需要___。
A. 拒绝接受其他国家的一切东西
B. 全面接受中国古代的传统文化和道德
C. 维护民族团结，促进祖国统一
D. 从经济基础到上层建筑的一切领域都与西方接轨
【单选题】
大学生是国家宝贵的人才资源，总是站在弘扬爱国精神的时代先列。在改革开放初期，大学生喊出了著名的爱国口号,这个充分体现他们爱国情怀的口号是___。
A. 为中华崛起而读书
B. 天下兴亡，匹夫有责
C. 振兴中华，从我做起
D. 爱我中华，从我做起
【单选题】
以下关于爱国主义与爱社会主义具有一致性的说法，是针对___的基本要求。
A. 中华人民共和国公民
B. 全体中华儿女
C. 生活在祖国大陆的中国公民
D. 生活在祖国大陆的一切人
【单选题】
把握经济全球化趋势与爱国主义的相互关系的问题上，需要着重树立一些观念，其中不包括___。
A. 人有地域和信仰的不同，但报效祖国之心不应有差别
B. 科学没有国界，但科学家有祖国
C. 顺应经济全球化，适时改变爱国主义立场
D. 经济全球化过程中要始终维护国家的主权和尊严
【单选题】
热爱自己的国家是爱国主义的必然政治要求。在当代中国，爱国主义首先体现在___
A. 对社会主义新中国的热爱上
B. 对中华民族传统道德的热爱上
C. 对世界各国一切文明成果的热爱上 D.对祖国壮丽河山、秀美风景的热爱上
【单选题】
真正的爱国者，在任何时候、任何情况下都要把___放在第一位，把民族自尊心和自豪感体现在爱国的实际行动中。
A. 维护国家的社会主义制度
B. 维护国家安全、荣誉和利益
C. 维护集体和个人的人身和财产安全
D. 维护个人利益
【单选题】
戚继光抗击倭寇，郑成功收复台湾，三元里人民抗英，轰轰烈烈的义和团运动，浴血八年的全民族抗日战争等，这些爱国壮举集中体现了中华民族爱国主义优良传统中___。
A. 维护祖国统一，促进民族团结的精神
B. 抵御外来侵略，捍卫国家主权的精神
C. 心系民生苦乐，推动历史进步的精神
D. 开发祖国山河，创造中华文明的精神
【单选题】
以下表述正确的是___。
A. 古今中外爱国主义的含义是一致的
B. 爱国主义与拥护祖国统一不同
C. 爱国主义与爱社会主义具有一致性
D. 爱国主义对港澳台同胞和海外侨胞的要求很低
【单选题】
“爱祖国、爱人民、爱劳动、爱科学、爱社会主义”是社会主义道德的基本要求。在当代中国，对“爱祖国”的要求集中体现为___。
A. 成为坚定的共产主义者；
B. 积极参加中国特色社会主义建设
C. 追求健康、文明、科学的生活方式；
D. 通过诚实劳动、合法经营去获取利益和财富
【单选题】
民族精神是一个民族在长期共同生活和社会实践中形成的。在五千多年的发展中，中华民族形成了伟大的民族精神。中华民族精神的核心是___。
A. 爱国主义
B. 集体主义
C. 社会主义
D. 人道主义
【单选题】
爱国主义与个人实现人生价值的关系___。
A. 爱国主义阻碍个人实现人生价值
B. 爱国主义是个人实现人生价值的力量源泉
C. 爱国主义与个人实现人生价值无关
D. 爱国主义有时会帮助个人实现人生价值
【单选题】
下列选项中，体现了中华民族爱国主义优良传统中“心系民生苦乐，推动历史进步”的高尚品质的是___。
A. 君使臣以礼，臣事君以忠
B. 知之为知之，不知为不知，是知也
C. 老吾老，以及人之老；幼吾幼，以及人之幼
D. 先天下之忧而忧，后天下之乐而乐
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【单选题】
Permissive parents would ________. ___
A. let their children read any books they like to
B. not let their children see any films they like to
C. not let their children read any books without first checking their contents
D. let their children see the films with their first checking
【单选题】
The fact that parents check the contents of the book or the film for their children to read or see shows __________. ___
A. the necessity of censorship
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【单选题】
Which of the following statements is NOT true?____________ ___
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【单选题】
What would be the best title of this passage?_____________ ___
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【单选题】
Lie detectors are widely used in the United States because _____________. ___
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【单选题】
According to the passage, we know that Britain______________. ___
A. will adopt lie detectors widely
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【单选题】
The tests themselves are by no means free from error..." (Line 1-2.Para.3) means ____________. ___
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【单选题】
Which of the following is true? ________________ ___
A. The tests are conducted by qualified polygraphers.
B. Innocent people may blush or stammer when questioned.
C. Guilty people can definitely be found out by answer questions
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What troubles lie detector researchers most is that _______________. ___
A. innocent people are convicted crimes
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【单选题】
In the passage the author's attitude towards "mixed-ability teaching" is _______. ___
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【单选题】
By "held back" (Line 1) the author means _____. ___
A. made to remain in the same classes
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【单选题】
The author argues that a teacher's chief concern should be the development of the student's _________. ___
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Which of the following is NOT MENTIONED in the third paragraph? __________ ___
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B. Pupils also learn to develop their reasoning abilities.
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【单选题】
The author's purpose in writing this passage is to ______. ___
A. argue for teaching bright and not-so-bright pupils in the same class
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【单选题】
According to the author, the deaths among youth are mainly caused by _____. ___
A. traffic accidents
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【单选题】
Every day there are over_____high school students who will become regular smoker. ___
A. 75
B. 23
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D. 3000
【单选题】
By "dropout" the author means______. ___
A. students who failed the examination
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The reason for declining adolescent smoking is that ________. ___
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D. not stated
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What is implied but not stated by the author is that ________. ___
A. smoking rates among youth have declined very little
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According to the passage, which of the following is NOT a disadvantage of part time education? _______________ ___
A. It requires some break in one's career.
B. It tends to last too long for many people to complete a degree program.
C. It affects one's career.
D. It gives the student less time to share with the family.
【单选题】
Which of the following is NOT an advantage of distance learning? _________ ___
A. The student may choose his or her own pace.
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C. They can pursue their chosen career while studying.
D. Their tutorial assistance comes through regular airmail, telephone, etc.
【单选题】
What benefit will distance learning program bring to a business? __________ ___
A. Recruitment of more talented people.
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【单选题】
Good distance learning program have the following characteristic EXCEPT______. ___
A. distance learning course is the same as students taking courses in campus
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【单选题】
What benefit will distance learning bring to an employee of a business? ___________ ___
A. Professional growth.
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【单选题】
In the first paragraph, what does "plastic money" (Line 6, Para.1) refer to? ______ ___
A. Dollars.
B. Online payment.
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D. Coins.
【单选题】
Which of the following is NOT true about credit cards? ____________ ___
A. Shopkeepers, among others, object to the use of credit cards because they add on the cost of the merchandise.
B. Credit card holders actually pay for their goods after the purchase has been completed.
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D. It has had the effect of increasing consumption.
【单选题】
What is the disadvantage of credit cards? _____________ ___
A. It may lead to the overgrowth of the national economy.
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【单选题】
What is the main topic of the text? ________________ ___
A. Advantages and Disadvantages of Credit Cards.
B. Economic Growth Backed up by the Use of Credit Cards.
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【单选题】
The author's attitude towards credit card is.______________. ___
A. agreeable
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【单选题】
在甲午战争后，严复翻译的《天演论》所宣传的重要思想是___。
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【单选题】
鸦片战争以清政府的失败而告终。1842 年 8 月 29 日，清政府与英国签订了中国近代史上的第一个不平等条约是___。
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德国元帅瓦德西说：“无论欧、美、日本各国，皆无此脑力与兵力，可以统治此天下生灵四分之一，故瓜分一事，实为下策。”这表明___。
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