英语六级考试快速阅读实战练习(5)
洛基英语，中国在线英语教育领导品牌
A balanced diet is one that provides an adequate intake of energy and nutrients for maintenance of the body and therefore good health. A diet can easily be adequate for normal bodily functioning, yet may not be a balanced diet.
Carbohydrates
Carbohydrates are a rapid source of energy, they are the body’s fuel. The bulk of a balanced diet should be made from carbohydrates. If eaten in an excess of the dietary requirements carbohydrates are easily stored as fats in the cells, although carbohydrate is the first source of energy in the body.
An average adult requires about 12,000kJ of energy a day, most of this is supplied by the respiration of carbohydrates in the cells.
Carbohydrates are used principally as a respiratory substrates, i.e. to be oxidised to release energy for active transport, macromolecule synthesis, cell division and muscle contraction. Carbohydrates are digested in the duodenum and ileum and absorbed as glucose into cells. Sources of carbohydrates such as starch are rice, potatoes, wheat and other cereals. Sugars are also carbohydrates, sources of sugars are refined sugar - sucrose, which is a food sweetener and preservative and fruit sugars - fructose. If the diet lacks carbohydrate stores of fat are mobilised and used as an energy source.
Proteins
Protein is not a direct source of energy in the body, it is used primarily for growth and repair of body tissues while remaining an energy source as a last resort. Proteins fulfill a wide variety of roles in the body. They are broken down in the stomach and intestines to amino acids which are then absorbed. The body can only form 8 amino acids to build proteins from, the diet must provide Essential Amino Acids (EAAs) which are synthesised into proteins which can be structural, i.e. collagen in bone, keratin in hair, myosin and actin in muscle; metabolic enzymes, hemoglobin, protective antibodies and communicative hormones.
Sources of protein include meat, fish, eggs and pulses. The diet needs to provide 8 EAAs as the body is unable to synthesis proteins without these molecules. 2 other amino acids are synthesised from EAAs so if the diet lacks the original EAAs these other two will not be present either. Phenylalanine is converted to tyrosine and methionine is converted to cysteine. Cells draw upon a pool of amino acids for protein synthesis which either come from dietary protein digested and absorbed in the gut and the breakdown of body protein such as muscle. However, unlike fats and carbohydrates there is no store of amino acids for cells to draw on, any amino acid in excess of immediate bodily requirements is broken down into urea and excreted. It is therefore important to maintain the dietary intake of protein everyday. If the body lacks protein, muscle wasting occurs as muscle is broken down.
If protein is lacked in a diet a person develops kwashiorkor which is caused when high levels of carbohydrates are eaten to overcome the lack of protein in the diet.
One symptom of kwashiorkor is the abnormal collection of fluid around the abdomen due to the lack of protein in the blood. The body cannot retain water by osmosis and fluid accumulates in tissues causing them to become waterlogged.
Vitamins
Vitamins cannot be synthesised by the body so must be supplied by diet. Vitamins have no common structure or function but are essential in small amounts for the body to be able to utilise other dietary components efficiently.
Vitamins fall into two categories, fat soluble vitamins such as vitamin A, D, E and K which are ingested with fatty foods and water soluble vitamins such as the B group vitamins and vitamin C. Vitamins are known as micronutrients because only small quantities are required for a healthy diet, in fact fat soluble vitamins can be toxic in high concentrations, for example the body stores vitamin A, or retinol, in the liver as it is toxic if kept in high concentrations in the blood stream, a dose of more than 3300mg of vitamin A can be considered toxic. Water soluble vitamins such as vitamin C and B groups vitamins can be excreted in the urine if in excess in the diet.
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2017年6月大学英语六级考试真题(三)
2017年6月大学英语六级考试真题及答案解析（第三套完整版） Part I Writing (30 minutes) Directions: Suppose you are asked to give advice on whether to attend college at home or abroad, write an essay to state your opinion. You are required to write at least 150 words but no more than 200 words. 【参考范文】 Whether to Attend College at Home or Abroad? Currently, with studying abroad gains mounting popularity among people, there is a heated debate about whether to attend college at home or abroad. Opinions on this topic vary from person to person. Some see more benefits in studying at home while others claim that studying abroad is a more ideal choice as it?s more challenging. Personally, I am a strong favorer of the latter view. Listed below are the reasons for my advice. First of all, attending college abroad provides an opportunity to broaden one?s experience and mind. You can acquire cross-cultural experiences and gain new perspectives on your chosen field of study. In addition, studying abroad helps you to polish your social skills; you can make friends with different people with different background. Thirdly, overseas studying is conducive to the formation of an independent, autonomous and tenacious personality, which will ultimately benefit the achievement of our life goals. Just as an old saying goes: “It is better to travel thousand miles than to read ten thousand books.” Then studying abroad can not only enable us to reap in our books, but also in our trips. And this is why attending college abroad is a preferable selection for me. Part II Listening Comprehension (30 minutes) 说明：2017年6月大学英语六级真题全国共考了两套听力。本套（即第三套）的听力材料与第一套完全一样，只是选项的顺序不同而已，故本套不再重复给出。 Part III Reading Comprehension (40 minutes) Section A Directions: In this section, there is a passage with ten blanks. You are required to select one word for each blank from a list of choices given in a word bank following the passage. Read the passage through carefully before making your choices. Each choice in the bank is identified by a letter. Please mark the corresponding letter for each item on Answer Sheet 2 with a single line through the centre. You may not use any of the words in the bank more than once.
大学英语六级阅读理解专题训练
大学英语六级阅读理解专题训练 2016年下半年英语四六级迫在眉睫，同学们准备得如何了?下面是网提供给大家关于大学阅读理解专题训练，希望对大家的备考有所帮助。 What is it about Americans and food? We love to eat, but we feel 1 about it afterward. We say we want only the best, but we strangely enjoy junk food. We’re 2 with health and weight loss but face an unprecedented epidemic of obesity(肥胖). Perhaps the 3 to this ambivalence(矛盾情结) lies in our history. The first Europeans came to this continent searching for new spices but went in vain. The first cash crop(经济作物) wasn’t eaten but smoked. Then there was Prohibition, intended to prohibit drinking but actually encouraging more 4 ways of doing it. The immigrant experience, too, has been one of inharmony. Do as Romans do means eating what “real Americans” eat, but our nation’s food has come to be 5 by imports—pizza, say, or hot dogs. And some of the country’s most treasured cooking comes from people who arrived here in shackles. Perhaps it should come as no surprise then that food has been a medium for the nation’s defining struggles, whether at the Boston Tea Party or the sit ins at southern lunch counters. It is integral to our concepts of health and even morality whether one refrains from alcohol for religious reasons or evades meat for political 6 . But strong opinions have not brought 7 . Americans are ambivalent about what they put in their mouths. We have become 8 of our foods, especially as we learn more about what they contain. The 9 in food is still prosperous in the American consciousness. It’s no coincidence, then, that the first Thanksgiving holds the American imagination in such bondage(束缚). It’s w hat we eat—and how we 10 it with friends, family, and strangers—that help define America as a community today. A. answer I. creative B. result J. belief C. share K. suspicious D. guilty L. certainty E. constant M. obsessed F. defined N. identify
英语快速阅读：英语六级考试中的如何提高阅读效率
英语快速阅读：英语六级考试中的如何提高阅读效率在继“出国考托福需要的三种快速阅读（按住ctrl键，鼠标点击可做具体了解）技巧”和“出国考雅思需要快速阅读”等英语快速阅读文章外，精英特速读记忆训练网再推出“英语六级考试中的如何提高阅读效率”以供大家作英语快速阅读技巧及训练的参考。 大学英语六级考试大纲（2006年修订版）明确指出：快速阅读部分采用1~2篇较长篇幅的文章或多篇短文，总长度约为1200词。要求考生运用略读（skimming）和查读（scanning）的技能从篇章中获取信息。略读考核考生通过快速阅读获取文章主旨大意或中心思想的能力，阅读速度约为每分钟120词；查读考核学生利用各种提示，如数字、大写单词、段首或句首词等，快速查找特定信息的能力。 其中“每分钟120词”的“高速度”通常会让大多数考生感到无从下手。其实不必如此，下面介绍三招来实现快速阅读真正的又快又好！ 第一招：明确试题特点，做到有的放矢 从近几年的真题来看，快速阅读理解部分采用的题型有是非判断题、句子填空题和选择题等。 1. 是非判断题 是非判断题要求我们根据原文信息判断题目中各个句子的描述是“对（Yes）”、“错（No）”还是“未提及（Not Given）”。判断的原则是确定题干与原文语句之间的关系，基本标准是：如果题干与原文意思一致，就是“对（Y）”； 如果题干与原文意思不一致，就是“错（N）”； 如果题干与原文既不一致也不矛盾，则说明原文对题干表述的事物不曾提及，或未作判断，即为“未提及（NG）”。 2. 句子填空题 句子填空题主要通过改变原文句子结构，或者变换其中的连接词，或缺省其中的某个句子成分，让考生补充所需内容。这类题目要先分析所缺的部分，是一个词、短语、还是从句等，是名词性、动词性还是形容词性等，填的时候要“对症下药”；最后分析原文相关语句，尽量用原文词语填空，但要做到简练，以保证所填内容的准确性。 3. 选择题 选择题是快速阅读的一个备选题型，四个选项就意味着关键词出现的高频率，也相对降低了解题难度。快速阅读的选择题一般很少有需要推理或综合判断的题目，只需根据题干的关键词定位到文中相关语句，答案即一目了然。 第二招：掌握阅读方法，以求成竹在胸 快速阅读题目考查的阅读方法是略读（skimming）和查读（scanning），强调的是考生在实践语言环境中查询有效信息的能力，其中略读（skimming）的重点在于快速了解文章的中心思想，查读（scanning）的重点在于有目标地找出文中某些特定的信息。
英语六级阅读临战策略
距离大学英语六级考试还有不足一个月的时间，笔者给临战的考生朋友们一些建议。希望能通过本文帮大家梳理一个头绪，在最后的备战中尽量做到有的放矢，弹无虚发。 一、快速阅读。 大学六级中的第一道阅读题目是快速阅读，很多考生朋友都向笔者反映：快速阅读怎么做啊？拿到题目是先看文章还是先看题目啊？怎么我总是做不完题啊？有什么方法可以提高阅读速度啊？等等等等……这几个问题相信也是大家最关心的，那接下来，笔者将从六级快速阅读的命题特征，做题步骤，解题方法几个角度来谈谈如何攻克快速阅读。 1.六级快速阅读的命题特征。 六级快速阅读的文章篇幅约为1200单词，通常是略多一些的，整个题目的给定时间为15分钟。文章之后是十道题目，这十题可以会出现两种组合：一种为4道是非判断题(也就是大家所熟悉的Y/N/NG题)加上6道句子填空题(也可称补全句子)；另一种为7道选择题加上3道句子填空题。 至于考试最终会以哪种形式出题，在考纲中是没有明确说明的，从改革之后的几次实考情况来看，06年12月六级开始使用新题型，到09年6月的六级考试中，第一种题目组合形式考了两次，分别是06年12月和07年6月；第二种题目组合形式考了之后的四次。大家可以从以上的信息中来分配自己对于每种题型的复习时间。 2.六级快速阅读的做题步骤。 由于整个快速阅读部分总体时间为15分钟，如果不进行合理的规划，这样的时间是绝对不够用的。很多考生朋友会问到底应该以一种什么样的顺序来做题？我们先来了解一下在考试大纲中的说法： “要求考生运用略读和查读的技能从篇章中获取信息。略读考核学生通过快速阅读获取文章主旨大意或中心思想的能力，阅读速度约为每分钟120词。查读考核学生利用各种提示，如数字、大字单词、段首或句首词等，快速查找特定信息的能力。” 从考纲中我们发现，这里有三个重点信息：略读、查读、速度为120词/分钟。从这三点上我们基本上可以确实整体的步骤了，那就是选定信息+回到文章查找信息+对比解题。而且我们应该是看一题，做一题。这就是所谓的略读、查读。其实这正是我们平时所使用的从题干中找关键词，回文章定位的办法。快速阅读其实就是考定位。 而另外一个信息，阅读速度问题，表面上看到这个120词/分钟，很考生都望而却步，这绝对是一个无法企及的速度，但笔者提醒大家看它前面的文字，这样读的目的是为了获取文章主旨大意，而不是精细分析，于是结合大家以往所掌握的英语阅读知识应该知道，在英语中主旨的位置往往是相对固定的，想要把握1200个单词的文章的主旨根本不需要全文阅读，只需要看几个位置就可以了，如标题、首段、小标题。所以说这里的阅读速度应该更确切的讲是平均速度。
大学英语六级CET6真题及答案
大学英语六级CET6真题及答案 part i listening comprehension (20 minutes) section a 1.a) the dean should have consulted her on the appointment. b) dr. holden should have taken over the position earlier. c) she doesn’t think dr. holden has made a wise choice. d) dr. holden is the best person for the chairmanship. 2 .a) they’ll keep in touch during the summer vacation b) they’ll hold a party before the summer vacation c) they’ll do odd jobs together at the school library d) they’ll get back to their school once in a while 3. a)peaches are in season now. b)peaches are not at their best now. c)the woman didn’t know how to bargain. d)the woman helped the man choose the fruit. 4.a)they join the physics club. b)they ask for an extension of the deadline. c)they work on the assignment together. d)they choose an easier assignment. 5.a)she admires jean’s straightforwardness b)she thinks dr. brown deserves the praise c)she will talk to jean about what happened d)she believes jean was rude to dr. brown 6.a)he liked writing when he was a child b)he enjoyed reading stories in reader’s digest c)he used to be an editor of reader’s digest d)he became well known at the age of six 7.a)he shows great enthusiasm for his studies b)he is a very versatile person c)he has no talent for tennis d)he does not study hard enough 8 a) john has lost something at the railway station b) there are several railway stations in the city c) it will be very difficult for them to find john d) the train that john is taking will arrive soon 9. a)its rapid growth is beneficial to the world
2019年6月英语六级阅读真题及答案：Passage One答案及解析
2019年6月英语六级阅读真题及答案：Passage One答案及解析 Questions 46 to 50 are based on the following passage Professor Stephen Hawking has warned that the creation of powerful artificial intelligence (AI) will be “either the best, or the worst thing, ever to happen to humanity”, and praised the creation of an academic institute dedicated to researching the fut ure of intelligence as “crucial to the future of our civilization and our species.” Hawking was speaking at the opening of the Leverhulme Centre for the Future of Intelligence (LCFI) at Cambridge University, a multi-disciplinary institute that will attempt to tackle some of the open-ended questions raised by the rapid pace of development in AI research. “We spend a great deal of time studying history,” Hawking said, “which, let’s face it, is mostly the history of stupidity. So it’s a welcome change that people are studying instead the future of intelligence.” While the world-renowned physicist has often been cautious about AI, raising concerns that humanity could be the architect of its own destruction if it creates a super-intelligence with a will of its own, he was also quick to highlight the positives that AI research can bring. “The potential benefits of creating intelligence are huge,” he said. “We cannot predict what we might achieve when our own minds are amplified by AI. Perhaps with the tools of this new
2017年6月大学英语六级真题(卷二)
2017年6月大学英语六级考试真题（第二套） Part I Writing (30 minutes) Directions: Suppose you are asked to give advice on whether to attend a vocational college or a university, write an essay to state your opinion. You are required to write at least 150 words but no more than 200 words. Part II Listening Comprehension (30 minutes) Section A Directions: In this section, you will hear two long conversations. At the end of each conversation, you will hear four questions. Both the conversation and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A), B), C) and D). Then mark the corresponding letter on Answer Sheet 1 with a single line through the centre. Questions 1 to 4 are based on the conversation you have just heard. 1. A) He would feel insulted. B) He would feel very sad. C) He would be embarrassed. D) He would be disappointed. 2. A) They are worthy of a prize. B) They are of little value. C) They make good reading. D) They need improvement. 3. A) He seldom writes a book straight through. B) He writes several books simultaneously. C) He draws on his real-life experiences. D) He often turns to his wife for help. 4. A) Writing a book is just like watching a football match. B) Writers actually work every bit as hard as footballers. C) He likes watching a football match after finishing a book. D) Unlike a football match, there is no end to writing a book. Questions 5 to 8 are based on the conversation you have just heard. 5. A) Achievements of black male athletes in college. B) Financial assistance to black athletes in college. C) High college dropout rates among black athletes. D) Undergraduate enrollments of black athletes.
英语六级快速阅读专项训练(真题版附答案和详解)
1.Why Integrity Matters What Is Integrity? The key to integrity is consistency- not only setting high personal standards for oneself (honesty, responsibility, respect for others, fairness) but also living up to those standards each and every day. One who has integrity is bound by and follows moral and ethical (道德上的) standards even when making life's hard choices, choices which may be clouded by stress, pressure to succeed, or temptation. What happens if we lie, cheat, steal, or violate other ethical standards? We feel disappointed in ourselves and ashamed. But a lapse (缺失) of integrity also affects our relationships with others. Trust is essential in any important relationship, whether personal or professional. Who can trust someone who is dishonest or unfair? Thus integrity must be one of our most important goals. Risky Business We are each responsible for our own decisions, even if the decision, making process has been undermined by stress or peer pressure. The real test of character is whether we can learn from our mistake, by understanding why we acted as we did and then exploring ways to avoid similar problems in the future. Making ethical decisions is a critical part of avoiding future problems. We must learn to recognize risks, because if we can't see the risks we're taking, we can't make responsible choices. To identify risks, we need to know the rules and be aware of the facts. For example, one who doesn't know the rules a about plagiarism (剽窃) may accidentally use words or ideas without giving proper credit or one who fails to keep careful research notes may unintentionally fail to quote and cite sources as required. But the fact that such a violation is "unintentional" does not excuse the misconduct, Ignorance is not a defense. "But Everybody Does It" Most people who get in trouble do know the rules and facts but manage to fool themselves about the risks they're taking by using excuses: "Everyone else does it." "I'm not hurting anyone", or "I really need this grade." Excuses can get very elaborate: "I know I'm look at another's exam, even though I'm supposed to keep my eyes on my own paper, but that's not cheating because I’m just checking my answers, not copying." We must be honest about our actions and avoid excuses, if we fool ourselves into believing we're not doing anything wrong, we can't see the real choice we're making - and that leads to bad decisions. To avoid fooling yourself, watch out for excuses and try this test: Ask how you would feel if your actions were public and anyone could be watching over yore shoulder. If you'd rather hide your actions, that's an indication that you're taking a risk and rationalizing it to yourself. Evaluating Risks To decide whether a risk is worth taking, you must examine the consequences, in the future as well as right now, negative as well as positive, and to others as well as to yourself. Those who take risks they later regret usually focus on immolate benefits and simply haven't considered what might go wrong. The consequences of getting caught are serious and may include a "O" on a test or assignment, an "F" in the class, suspension (暂令停学) or dismissal from school and a ruined reputation. In fact, when you break a role or law, you lose control over your life and give others the power to impose punishment that you have no control over. This is an extremely vulnerable (脆弱的) position. There may be some matters of life and death or highest principle, which might justify such a risk, but there aren't many things that fall in this category. Getting Away with it - Or Not Those who don't get caught pay an even higher price. A cheater doesn't learn from the test, which deprives (剥夺) him her of an education. Cheating undermines confidence and independence: the cheater is a fraud, and knows that without dishonesty, he/she would have failed. Cheating destroys self-respect and integrity, leaving the cheater ashamed, guilty and afraid of getting caught. Worst of all, a cheater who doesn't get caught the first time usually cheats again, not only because he/she is farther behind, but also because it seems "easier." This slippery slope of eroding ethics and bigger risks leads only to disaster. Eventually, the cheater gets caught, and the later he/she gets caught, the worse the consequences. Cheating Hurts Other, Too Cheaters often feel invisible, as if their actions "don't count" and don't really hurt anyone. But individual choices have an intense cumulative (累积的) effect. Cheating can spread like a disease. Recent statistics suggest 30％or more of college students cheat. If a class is graded on a curve, cheating hurts others' grades. Even if there is no curve, cheating "poisons" the classroom, and others may feel pressured to join in. ("If I don't cheat I can't compete with those who do") Cheating also has a destructive impact on teachers. The real reward of goof teaching is seeing students learn. But a cheater says. "I'm not interested in what you're trying to teach, all I care about is stealing a grade, regardless of the effect on others." The end result is a destructive attack on the quality of your education. Finally, cheating can hurt the reputation of the university and harm those who worked hard for their degree.
2017年6月大学英语六级考试真题及答案解析(全三套)
2017年6 月英语六级真题及答案（三套全） 2017年6月英语六级真题 作文一：国内国外上大学 Directions: Suppose you are asked to give advice on whether to attend college at home or abroad, write an essay to state your opinion. You are required to write at least 150 words but no more than 200 words. 参考答案 Nowadays, there has been a heated discussion as to a better choice between attending college at home and abroad. Views on the topic vary greatly among people from different walks of life. Some believe that it is a better choice to study in domestic colleges, but others consider it better to study abroad. I totally agree with the latter idea for the reasons presented below. To begin with, it harms the society in that the greater the competition is, the higher the recruitment requirements will become. Therefore, with experiences of studying abroad, graduates will become more competitive in job hunting. Furthermore, it is beneficial to the students themselves to study abroad. Without the choice to pursue overseas study, many great scholars today would never have achieved such great success. From my perspective, it is crucial that the government should encourage people to pursue overseas study. Also it is crucial that people should understand the meaning and value of attending college abroad. Only in this way can we achieve greater success. 作文二：文科还是理科 Directions: Suppose you are asked to give advice on whether to major in humanities or science, write an essay to state your opinion. You are required to write at least 150 words but no more than 200 words. 参考范文： Living in a world which is full of changes and challenges,we are confronted with new problems every single day. Of all the issues, one might concern the high school graduates the most, and it is if there are two options: to major in science or humanities. As for me, I prefer the latter. Why,you may wonder, should I prefer to major in humanities. The reasons responsible for it can be listed as follows . Among the most important reasons cited by people is that to major in humanities，directly or indirectly，can not only enrich our basic knowledge about the diversified culture but also sharpen one’s insight in daily routine，which is of great importance in one’s growth. What’s more, to study humanities can give us an independent personali ty and a deeper vision towards the world, if it were not for those two attributes, how could we achieve great goals in this dog-eat-dog world. Above all, in such a society where emphasis，more often than not，is laid on the depth of one’s thought, to choose humanities as one’s major, must be the best way .