大学英语新视野2第三版Unit2课后练习答案
Unit 2
Text A
Reading comprehension
Critical thinking
1. Gain more insight into life and society; better understand and predict human behavior; realize different interpretations of life and history; understand the past which has created the present; be aware of cultural and religious differences
2. help read and write better; broaden their horizons; become more well-rounded; become a better communicator; develop critical thinking skills; have more flexibility for the future career.
3. personal interest; special talents; future job prospects; financial status; family advice; social environment
4. better job opportunities; more practical skills; highly-paid jobs
5. yes, it invests students with great insight; yes, it helps students to be better-rounded; yes, it provides students with flexibility to change their career; no, it doesn’t satisfy students’ needs for their future career; no, colleges are experiencing deep budget cuts and need to prioritize their financial resources; no, the society needs more skills, not literature.
Language focus
Words in use
3.
1. promote;
2. Accelerate;
3. Mystery;
4.insight;
5. Boost;
6. Analysis;
7.caculate;
8.barriers;
9.destruction; 10.prospect
Word building
4.
Promise-----promising; bear-----bearing; house-----housing; object-----objective; offensive-----offend; exclusive-----exclude; excessive----excess; executive----execute; intense----intensify; identify----identity
5
1.excess;
2.bearing;
3.objective;
4.intensify;
5.execute;
6.promising;
7.exclude;
8.identity;
9.offend; 10.housing
Banked cloze
6
1.c;
2.h;
3.d;
4.j;
5.b;
6.l;
7.m;
8.g;
9.f; 10.a
Expressions in use
7
1. are liable to;
2.in favor of;
3. Is bound to;
4.speculate about;
5. Invested…with;
6. Stand up for;
7.in the form of; 8. Prepared for; 9. In the company of; 10. In succession
Structure analysis and writing
Structured writing
8
Did you have such an experience as when your high-school physical education teacher pushed you to run for several miles around the sports field in a P.E. class? When you were sweating and out of breath, did you ever wish that you could only stop taking a P.E. class in college? However,
taking P.E. courses can be advantageous to all college students.
First, taking P.E. classes helps students learn valuable communication and teamwork skills. There are many activities that require students to communicate and interact with each other when they are having a P.E. class. For example, when one group competes with the other in playing basketball, group cooperation is extremely important in order to win. Effective teamwork usually requires good communication skills.
Another advantage is that taking P.E. classes enable students to more effectively handle their heavy coursework. Not infrequently, students sleep and no exercise. Through taking P.E. courses, students build up their health. Only when students stay healthy can they learn better.
To sum up, taking a P.E. course at college can benefit students in developing useful social skills as well as better coping skills for their stress at school. Therefore, P.E. course bring students advantages both physically and academically.
Translation
9
慕课是一种网络课程，目的是通过网络，实现广泛参与和开放接入。慕课是远程教育的新产物，在高等教育界风行一时。这些课程旨在扩大大学的影响范围，突破受众仅限于居住在城里的缴费学生的桎梏，从而惠及全球数百万学生。慕课不仅可以提供传统的课程材料，还可以提供用户互动论坛，为师生交流提供支持。慕课能够促进参与者之间的交流，将多种多样的观点、知识和技能引入课程。慕课激励人们尝试以前不敢尝试的课程，甚至可以激励那些人们去尝试接受教育。慕课提供多种课程资料学习方式，鼓励多模式学习。多模式学习可以提供多种学习方式，从而满足学习者的多样化需求。慕课更可以激励人们改善面授课程教学，使技术在面授课程中得到更好地应用。
Thanks to recent developments in Internet technology, great achievements have been made in establishing reservoirs of digital education resources. Many universities have set up their own digital learning platforms, which enables digital teaching to play an increasingly important role in education. The digital way of teaching, in comparison to its traditional counterpart, has a lot of advantages. It turns global sharing of teaching resources into a reality. It also expands learners’study time and space to learn, allowing them to get access to the digital virtual schools through the Internet anytime anywhere. These advantages make it possible for people to shift from one-time learning to lifelong learning.
Text B
Understanding the text
2
1.C;
2. D.
3. C;
4. A;
5. D;
6. B;
7. B;
8. A
Critical thinking
1.It’s very true because the job market is becoming more competitive.
Yes, without a college degree, one can end up with nothing to do.
Sure, college brings students knowledge and personal growth.
No, it’s not necessary to get a college degree to have a better career.
Disagree, college is too expensive now for students and family to afford.
2. more competitive; more knowledgeable; more confident more opportunities;
3. traditional ideology; more promising future; high expectations of their children
4. worth their money because it’s an investment that will pay off later.
A waste of their money because the tuition is too high
Not sure if they’ll profit from the large sum they invested
5. analytical ability; critical thinking skills; broad knowledge
Language focus
Words in use
4
1.enroll;
2.revise;
3.accumulate;
4.accoreded;
5.evaluate;
6.prime;
7.confirm;
8.shrinking;
9.sufficient;
10.recruit
Expressions in use
5
1.bother to;
2.is available to;
3.been compelled to;
4. Described…as;
5.exposed…to;
6.rather than;
7. Have sth to do with; 8. For its own sake
Sentence structure
6
1. A teacher, no matter how knowledgeable he is, cannot teach his students everything they want to know.
2. no matter where you travel, you can always find someone to communicate with in English since English is an important language.
3. No matter what work a person is doing, if he give it his best each day, he creates lots of happiness for himself.
7
1. Although the number of applicants is small, there is little doubt that the program will help the students who really need financial aid.
2. There is no doubt that computer crime is a very serious problem, so people think that all hackers need to be punished for their actions.
3. Though the boy worked very hard and finally successfully passed the exam, there is no doubt that overwork and too much worry caused his illness.
Collocation
Warm-up
1. sufficient/promising jobs;
2. well-rounded human beings;
3. develop identity;
4. shrinking job market;
5. dominant pillars;
6. reform system;
7.specialized fields;
8. general consensus
8
1. promising;
2. worsens;
3.shrinking;
4.domimant;
https://www.wendangku.net/doc/50110738.html,nd;
6.great;
7.well-rounded;
8.creative;
9. Elegant; 10.constructive; 11.skills; 12. Make
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UNIT1 1.Not only can students choose when and where to learn for an online course, but they can also take time to think through answers before making a reply. 2.She is excited by the idea of online learning while he considers it meaningless and useless. https://www.wendangku.net/doc/50110738.html,municating with native English speakers is a very rewarding experience from which we can learn a lot. 4.Today, more and more people have access to the Internet through which they look for the information they need. 5.He wants her to give up working and stay at home to look after the children. She feels, however, that is too much for her. 6.Now that we have finished the course, we shall start doing. 1.我永远都不会忘记那位老师，是他告诉我学习外语是有趣的、有价值的。如果没有他，我的英语不会像现在这样说得这样好。 2.没有任何其他语言能像英语那样让你感受到多姿多彩的世界文化。有了过硬的英语知识，你就可以体验奇妙的文化之旅。 3.写作不仅仅是要写老师布置的话题，而且要写自己感兴趣的东西，例如，给朋友写电子邮件。 4.远程教学课程是指授课者与学生通过计算机通信技术进行交流的课程。 5.英语不但是世界上最有用的语言，也是世界最易学、易用的语言之一。 6.远程教学课程在时间安排上给予学生更多的自由，但与其他课程比，这些课程要求学生有更强的自律能力。 UNIT2 1.As she was about to turn off the music, her father burst into her room and shouted at her, “Can’t you turn down the music a little bit?” 2.The owner of the bar kept watching the girl dancing while pretending not to. 3.Rock music appeals to sandy so much that she turned it up, paying no attention to her father’s objection. 4.As us ual, when his parents don’t like what he wears, they start to bug him. 5.At the meeting they discussed how to keep the lines of communication open between teachers and students. 6.It makes my blood to think of these young boys and girls who are forced by their parents to beg money along the streets. 1. 我认为那些在镇上四处闲逛、浑身上下又文身又穿洞的青少年是在表达他们的个性。 2.因特网提供了一种更快捷的方式，让我们与全球的新老客户取得联系，并保持沟通渠道畅通无阻。 3.父母与自己十多岁的孩子的沟通问题不仅仅在于“代沟”，而且还在于双方都不完全理解对方的思想。 4.当父母与子女间有了这类沟通障碍时，青少年面临的问题更大。
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西安交大统计学考试试卷 一、单项选择题（每小题2分，共20分） 1.在企业统计中，下列统计标志中属于数量标志的是（C） A、文化程度 B、职业 C、月工资 D、行业 2.下列属于相对数的综合指标有（B ） A、国民收入 B、人均国民收入 C、国内生产净值 D、设备台数 3.有三个企业的年利润额分别是5000万元、8000万元和3900万元，则这句话中有（B）个变量？ A、0个 B、两个 C、1个 D、3个 4.下列变量中属于连续型变量的是（A ） A、身高 B、产品件数 C、企业人数 D、产品品种 5.下列各项中，属于时点指标的有（A ） A、库存额 B、总收入 C、平均收入 D、人均收入 6.典型调查是（B ）确定调查单位的 A、随机 B、主观 C、随意D盲目 7.总体标准差未知时总体均值的假设检验要用到（A ）： A、Z统计量 B、t统计量 C、统计量 D、X统计量 8. 把样本总体中全部单位数的集合称为（A ） A、样本 B、小总体 C、样本容量 D、总体容量 9.概率的取值范围是p（D ） A、大于1 B、大于－1 C、小于1 D、在0与1之间 10. 算术平均数的离差之和等于（A ） A、零 B、1 C、－1 D、2 二、多项选择题（每小题2分，共10分。每题全部答对才给分，否则不计分） 1.数据的计量尺度包括（ABCD ）： A、定类尺度 B、定序尺度 C、定距尺度 D、定比尺度 E、测量尺度 2.下列属于连续型变量的有（BE ）： A、工人人数 B、商品销售额 C、商品库存额 D、商品库存量 E、总产值 3.测量变量离中趋势的指标有（ABE ） A、极差 B、平均差 C、几何平均数 D、众数 E、标准差 4.在工业企业的设备调查中（BDE ） A、工业企业是调查对象 B、工业企业的所有设备是调查对象 C、每台设备是 填报单位D、每台设备是调查单位E、每个工业企业是填报单位 5.下列平均数中，容易受数列中极端值影响的平均数有（ABC ） A、算术平均数 B、调和平均数 C、几何平均数 D、中位数 E、众数 三、判断题（在正确答案后写“对”，在错误答案后写“错”。每小题1分，共10分） 1、“性别”是品质标志。（对） 2、方差是离差平方和与相应的自由度之比。（错） 3、标准差系数是标准差与均值之比。（对） 4、算术平均数的离差平方和是一个最大值。（错）
大学英语新视野标准答案
大学英语新视野答案
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Part 1 Short dialogs and multiple choice questions (每小题：分) Directions: Listen to the short dialogs, then choose the correct answers to the questions. You will hear the recording twice. After the first playing, there will be time for you to choose the correct answers. Use the second playing to check your answers. Questions 1 to 1 are based on the following passage or dialog. 1. A. Decrease imports. B. Increase imports. C. Decrease its deficit by 5%. D. Increase its deficit by 5%. Questions 2 to 2 are based on the following passage or dialog. 2. A. Raise the oil prices. B. Import less oil. C. Use less oil. D. Take buses more frequently. Questions 3 to 3 are based on the following passage or dialog.
统计学期末考试试题及答案(共2套)
期末考试 统 计 学 课程 A 卷试题 一、单项选择题（在每小题的四个备选答案中选择 一个正确的答案代码填入题前括号内，每小题1分，共10分） 【 】1、甲、乙两组工人的平均日产量分别为18件和15件。若两组工人的平均日产量不变，但是甲组工人数占两组工人总数的比重上升，则两组工人总平均日产量会 A 、上升 B 、下降 C 、 不变 D 可能上升，也可能下降 【 】2、甲班学生平均成绩80分，标准差8.8分，乙班学生平均成绩70分，标准差8.4分，则 A 、 乙班学生平均成绩代表性好一些 B 、甲班学生平均成绩代表性好一些 C 、无法比较哪个班学生平均成绩代表性好 D 、两个班学生平均成绩代表性一样 【 】3、某企业单位产品成本计划在上月的基础上降低2%，实际降低了1.5%，则单位产品成本降低计划完成程度为 A 、 75% B 、 99.5% C 、100.5% D 、 133.2% 【 】4、某企业最近几批产品的优质品率Ｐ分别为85％、82％、91％，为了对下一批产品的优质品率进行抽样检验，确定必要的抽样数目时,Ｐ应选 A 、91％ B 、85％ C 、94％ D 、82％ 【 】5、一般而言，总体平均数的无偏、有效、一致估计量是 A 、样本平均数 B 、样本中位数 C 、 样本众数 D 、不存在 【 】6、单相关系数等于零时意味着变量X 与Y 之间一定 A 、无任何相关关系 B 、无线性相关关系 C 、无非线性相关关系 D 、以上答案均错误 【 】7、在右侧检验中，利用P 值进行检验时，拒绝原假设的条件是 A 、P 值> α B 、P 值>β C 、 P 值< α D 、 P 值<β 【 】8、正态总体，方差未知，且样本容量小于30，这时检验总体均值的统计量应取 A 、n S x Z 0μ-= ～N(0,1) B 、 n x Z σμ0 -= ～N(0,1) C 、)1(~)1(2 2 2 2 --= n S n χσχ D 、)1(~0--= n t n S x t μ 【 】9、原始资料平均法计算季节指数时，计算各年同期（月或季）的平均数，
现代大学英语精读第二版第三册lesson 2答案
Lesson Two How Reading Changed My Life V ocabulary 1 Translate Into Chinese 1). a work of art 一件艺术品 2). bargain basement 便宜货；廉价商品区 3)printing press 印刷（机） 4)the source of quotation 引文出处 5)literary criticism 文学批评 6)in the latter half of the century 该世纪后半叶 7) a liberal arts college 文理学院 8) a man of action 实干家，说干就干的人 9）intellectual pursuits 对知识的追求；学习与研究 10）national character 民族性格 11）domino effect 多米诺骨牌效应 12）a tool for advancement 一种提升的工具，提高（自己）的方法 13）hale and hearty (美)健壮的，矍铄的 14）the virtues of reading 阅读的益处（好处） 15）a sense of superiority 一种优越感 Into English 1) 免予恐惧be free from fear (panic) 2) 从他父亲那里继承财产to inherit property from his father 3) 和学生互动to interact with students 4) 给年轻人作榜样to set an example for the youths (to act as a model for young people) 5）对挑战作出反应to react/respond to challenges 6) 反抗压迫to rebel against oppression 7) 渴望成功to aspire to success 8) 怀疑他们的动机be suspicious of their motives 9) 认真记住历史教训commit the lessons of history to memory 10) 向这些人让步give way to these people 11）将这地区一分为二to divide this region into two parts 12) 干涉我们的内部事务to interfere with our internal affairs 13) 主修土木工程to major in civil engineering 14) 把他们从绝望中救出来to save them from despair 15) 导致经济萧条to result in economic recession/slump/depression 3.Fill in the blanks with appropriate words. 1)into, in, with, for 2)to, to, 3)of, at, up, in, against
统计学考试试题及答案
统计学考试试题及答案文件编码（008-TTIG-UTITD-GKBTT-PUUTI-WYTUI-8256）
《统计学原理》期末考试题 一、单选题{每小题2分，共12分} 1.对某城市工业企业未安装设备进行普查，总体单位是(B )。 A.工业企业全部未安装设备 B.工业企业每一台未安装设备 C.每个工业企业的未安装设备 D.每一个工业企业 2.反映不同总体中同类指标对比的相对指标是( B)。 A.结构相对指标 B.比较相对指标 C.强度相对指标 D.计划完成程度相对指标 3.在组距分组时，对于连续型变量，相邻两组的组限(A ) A.必须是重叠的 B.必须是间断的 C.可以是重叠的，也可以是间断的 D.必须取整数 4.按随机原则直接从总体N个单位中抽取n个单位作为样本，这种抽样组织形式是（A）。 A.简单随机抽样 B.类型抽样 C.等距抽样 D.整群抽样 5.在其它条件不变的情况下，抽样单位数增加一半，则抽样平均误差(A ) A.缩小为原来的% B.缩小为原来的50% C.缩小为原来的25% D.扩大为原来的四倍 6.下列哪两个变量之间的相关程度高(C )。 A.商品销售额和商品销售量的相关系数是0. 9 B.商品销售额与商业利润率的相关系数是0. 84 C.平均流通费用率与商业利润率的相关系数是一 D.商品销售价格与销售量的相关系数是一
二、多选题(每小题2分，共8分) 1.要了解某地区的就业情况( ABE) A.全部成年人是研究的总体 B.成年人口总数是统计指标 C.成年人口就业率是统计标志 D.反映每个人特征的职业是数量指标 E.某人职业是教师是标志表现 2.影响加权算术平均数的因素有(AB ) A.各组频率或频数 B.各组标志值的大小 C.各组组距的大小 D.各组组数的多少 E.各组组限的大小 3.简单随机抽样(ACDE ) A.适用于总体各单位呈均匀分布的总体 B.适用于总体各单位标志变异较大的总体 C.在抽样之前要求对总体各单位加以编号 D.最符合随机原则 E.是各种抽样组织形式中最基本最简单的一种形式 4.下面哪几项是时期数列(BC ) A.我国近几年来的耕地总面积 B.我国历年新增人口数 C.我国历年图书出版量 D.我国历年黄金储备 E.某地区国有企业历年资金利税率 三、填空题(每小题2分.共10分) 1.变量按其取值的连续性可分为（离散变量）和（连续变量）两种。 2.统计调查根据（被研究总体范围）可分为全面调查和非全面调查，根据（调查登记时间是否连续）可分为连续调查和不连续调查。 3.总体是非标志(0,1)分布的平均数为P ，方差为P（1-P）。
现代大学英语-精读3(第二版)Unit-6-答案
Unit 6 Vocabulary Into Chinese 1.吸毒者;瘾君子 2.毒瘾 3.令人上瘾的药物 4.滥用毒品 5.毒品交易 6.毒品贩子 7.与毒品有关的犯罪和死亡 8.既得利益 9.麻醉药品管理局 10.黑社会 11.去掉犯罪的污名 12.禁果的诱惑 13.治疗中心 14.令人讨厌的大漏洞 15.执法 16.废除一条法律 17.合法化的赞成者和反对者
18.使吸毒失去魅力 19.发动一场毫不手软的禁烟运动 Into English 1. kick drug addiction 2. disprove the theory 3. start / launch a crime wave 4. get hooked on alcohols 5. push drugs 6. further criminalize drug-taking 7. legalize gambling 8. pump funds into education 9. bail out the ocean with a teaspoon 10. eliminate drug addiction 11. repeal the law 12. miss the boat 13. underestimate the seriousness of the consequence 14. confiscate property 15. dwarf the previous achievements 16. undercut the price 17. deglamorize cigarettes 18. project a new image
现代大学英语精读三第二版课后翻译答案
现代大学英语精读三课后翻译答案 Unit 1 Your collage years 1. 他对他的研究如此专心致志，从来没有过很快就要退休的念头。 He is so devoted to his research that the idea that he will soon have to retire ne ver occurs to him. 2. 很多人都曾说过，如果没有有效的制约，我们都有滥用权力的倾向。 Many people have observed that, without effective checks, we have a tendency to abuse our power. 3. 有些国家拒绝卷入这一争端，而且他们对外国的干涉非常反感。 Some countries refuse to get involved in this dispute and they resent any foreig n interference. 4. 控制沙尘暴需要大量的工作和资金。 The control of the sand storms will involve a tremendous amount of work and money. 5. 你们用这些技术的时候，必须考虑到当地的条件。 You have to take into consideration the local conditions when you apply these t echnologies. 6. 所有的申请者都必须填好这些表格，然后邮寄50美元的报名费。 All applicants will have to fill out this form and mail in an application fee of 50 d ollars. 7. 他根据对孩子们行为的观察得出结论：学习是一种自然的乐趣。 Based on his careful observation of children’s behavior he came to the conclusi on that learning is a natural pleasure. 8. 在一个多民族的国家里，各民族之间的和谐需要小心处理。 In a country of many nationalities, ethnic harmony requires very careful handlin g. 9. 9、政府决定严惩所有涉案的腐败官员。 The government is determined to punish all the corrupt officials involved. 10. 考试10、作弊并不经常发生，但一旦发生，学校会采取严厉的态度。 Cheating at exams does not occur very often. But when it does, the school take s a very tough position
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