2021年12月六级真题
- 更新时间:2022-06-07 14:26:13
- 题目:14道
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- 分类:英语四六级/英语六级
题库介绍: 全国大学英语四、六级考试(以下简称“CET”)系教育部主办、由教育部考试中心组织实施的全国统一标准化考试,考试目的是检测在校大学生的英语能力。
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1、 填空题
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. Questions26to35 are based on the following passage. A) assessed B) assigned C) consequences D) conspicuously E) deficits F) designated G) detrimental H) digestion I) excelling J) indulging K) loopholes L) rapidly M) redundant N) regularly O) similar When considering risk factors associated with serious chronic diseases, we often think about health indicators such as cholesterol, blood pressure, and body weight. But poor diet and physical inactivity also each increase the risk of heart disease and have a role to play in the development of some cancers. Perhaps worse, the ____ effects of an unhealthy diet and insufficient exercise are not limited to your body. Recent research has also shown that ___ in a high-fat and high-sugar diet may have negative effects on your brain, causing learning and memory ___. Studies have found obesity is associated with impairments in cognitive functioning, as ___ by a range of learning and memory tests, such as the ability to remember a list of words presented some minutes or hours earlier. There is also a growing body of evidence that diet-induced cognitive impairments can emerge ___—within weeks or even days. For example, one study found healthy adults ___ to a high-fat diet for five days showed impaired attention, memory, and mood compared with a low-fat diet control group. Another study also found eating a high-fat and highsugar breakfast each day for as little as four days resulted in problems with learning and memory ____ to those observed in overweight and obese individuals. Body weight was not hugely different between the groups eating a healthy diet and those on high fat and sugar diets. So this shows negative ___ of poor dietary intake can occur even when body weight has not changed ____. Thus, body weight is not always the best indicator of health and a thin person still needs to eat well and exercise ___.
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2、 填空题
Section B Directions: In this section, you are going to read a passage with ten statements attached to it. Each statement contains information given in one of the paragraphs. Identify the paragraph from which the information is derived. You may choose a paragraph more than once. Each paragraph is marked with a letter. Answer the questions by marking the corresponding letter on Answer Sheet 2. Increased Screen Time and Wellbeing Decline in Youth A) Have young people never had it so good? Or do they face more challenges than any previous generation? Our current era in the West is one of high wealth. This means minors enjoy material benefits and legal protections that would have been the envy of those living in the past. But there is an increasing suspicion that all is not well for our youth. And one of the most popular explanations, among some experts and the popular media, is that excessive & quote; screen time & quote; is to blame. (This refers to all the attention young people devote to their phones, tablets and laptops.) However, this is a contentious theory and such claims have been treated skeptically by some scholars based on their reading of the relevant data. B) Now a new study has provided another contribution to the debate, uncovering strong evidence that adolescent wellbeing in the United States really is experiencing a decline and arguing that the most likely cause is the electronic riches we have given them. The background to this is that from the 1960s into the early 2000s, measures of average wellbeing went up in the US. This was especially true for younger people. It reflected the fact that these decades saw a climb in general standards of living and avoidance of mass societal traumas like full-scale war or economic deprivation. However, the & quote; screen time & quote; hypothesis, advanced by researchers such as Jean Twenge, is that electronic devices and excessive time spent online may have reversed these trends in recent years, causing problems for young people's psychological health. C) To investigate, Twenge and her colleagues dived into the & quote; Monitoring the Future & quot; dataset based on annual surveys of American school students from grades 8, 10, and 12 that started in 1991. In total, 1.1 million young people answered various questions related to their wellbeing. Twenge’s team’s analysis of the answers confirmed the earlier, well-established wellbeing climb, with scores rising across the 1990s, and into the later 2000s. This was found across measures like self-esteem, life satisfaction, happiness and satisfaction with individual domains like job, neighborhood, or friends. But around 2012 these measures started to decline. This continued through 2016, the most recent year for which data is available. D) Twenge and her colleagues wanted to understand why this change in average wellbeing occurred. However, it is very hard to demonstrate causes using non-experimental data such as this. In fact, when Twenge previously used this data to suggest a screen time effect, some commentators were quick to raise this problem. They argued that her causal-sounding claims rested on correlational data, and that she had not adequately accounted for other potential causal factors. This time around, Twenge and her team make a point of saying that they are not trying to establish causes as such, but that they are assessing the plausibility of potential causes. E) First, they explain that if a given variable is playing a role in affecting wellbeing, then we should expect any change in that variable to correlate with the observed changes in wellbeing. If not, it is not plausible that the variable is a causal factor. So the researchers looked at time spent in a number of activities that could plausibly be driving the wellbeing decline. Less sport, and fewer meetings with peers correlated with lower wellbeing, as did less time reading print media(newspapers) and, surprisingly, less time doing homework .(This last finding would appear to contradict another popular hypothesis that it is our burdening of students with assignments that is causing all the problems.) In addition, more TV watching and more electronic communication both correlated with lower wellbeing. All these effects held true for measures of happiness, life satisfaction and self-esteem, with the effects stronger in the 8th and 10th-graders. F) Next, Twenge’s team dug a little deeper into the data on screen time. They found that adolescents who spent a very small amount of time on digital devices—a couple of hours a week—had the highest wellbeing. Their wellbeing was even higher than those who never used such devices. However, higher doses of screen time were clearly associated with lower happiness. Those spending 10-19 hours per week on their devices were 41 percent more likely to be unhappy than lower-frequency users. Those who used such devices 40 hours a week or more (one in ten teenagers) were twice as likely to be unhappy. The data was slightly complicated by the fact that there was a tendency for kids who were social in the real world to also use more online communication, but by bracketing out different cases it became clear that the real-world sociality component correlated with greater wellbeing, whereas greater time on screens or online only correlated with poorer wellbeing. G) So far, so plausible. But the next question is, are the drops in average wellbeing happening at the same time strands toward increased electronic device usage? It looks like it-after all, 2012 was the tipping point when more than half of Americans began owning smartphones. Twenge and her colleagues also found that across the key years of 2013-16, wellbeing was indeed lowest in years where adolescents spent more time online, on social media, and reading news online, and when more youth in the United States had smartphones. And in a second analysis, they found that where technology went, dips in wellbeing followed. For instance, years with a larger increase in online usage were followed by years with lower wellbeing, rather than the other way around. This does not prove causality, but is consistent with it. Meanwhile, TV use did not show this tracking. TV might make you less happy, but this is not what seems to be driving the recent declines in young people's average happiness. H) A similar but reversed pattern was found for the activities associated with greater wellbeing. For example, years when people spent more time with friends were better years for wellbeing (and followed by better years). Sadly, the data also showed face-to-face socializing and sports activity had declined over the period covered by the survey. I) There is another explanation that Twenge and her colleagues wanted to address: the impact of the the great recession of 2007-2009, which hit a great number of American families and might be affecting adolescents. The dataset they used did not include economic data, so instead the researchers looked at whether the 2013-16 wellbeing decline was tracking economic indicators. They found some evidence that some crude measures, like income inequality, correlated with changes in wellbeing, but economic measures with a more direct impact, like family income and unemployment rates (which put families into difficulties), had no relationship with wellbeing. The researchers also note that the recession hit some years before we see the beginning of the wellbeing drop, and before the steepest wellbeing decline, which occurred in 2013. J) The researchers conclude that electronic communication was the only adolescent activity that increased at the same time psychological wellbeing declined. I suspect that some experts in the field will be keen to address alternative explanations, such as unassessed variables playing a role in the wellbeing decline. But the new work does go further than previous research and suggests that screen time should still be considered a potential barrier to young people’s flourishing. ___ The year when most Americans began using smartphones was identified as a turning point in young Americans' level of happiness. ___ Scores in various wellbeing measures began to go downward among young Americans in recent years. ___ Unfortunately, activities involving direct contact with people, which contributed to better wellbeing, were found to be on the decline. ___ In response to past critics, Twenge and her co-researchers stress they are not trying to prove that the use of digital devices reduces young people’s wellbeing. ___ In the last few decades of the 20th century, living standards went up and economic depressions were largely averted in the US. ___ Contrary to popular belief, doing homework might add to students’ wellbeing. ___ The author believes the researchers’ new study has gone a step further regarding the impact of screen time on wellbeing. ___ The researchers found that extended screen time makes young people less happy. ___ Data reveals that economic inequality rather than family income might affect people’s wellbeing. ___ Too much screen time is widely believed to be the cause of unhappiness among today’s young people.
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3、 问答题
Part I Writing (30 minutes) Directions: For this part, you are allowed 30 minutes to write an essay on the importance of having a sense of social responsibility. You should write at least 150 words but no more than 200 words.
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4、 问答题
Part IV Translation (30 minutes) Directions: For this part, you are allowed 30 minutes to translate a passage from Chinese into English. You should write your answer on Answer Sheet 2. 荷花(lotus flower)是中国的名花之一,深受人们喜爱。中国许多地方的湖泊和池塘都适宜荷花生长。荷花色彩鲜艳,夏日清晨绽放,夜晚闭合。花期长达两三个月,吸引来自各地的游客前往观赏。荷花具有多种功能,既能绿化水面,又能美化庭园,还可净化水质、减少污染、改善环境。荷花迎骄阳而不惧,出污泥而不染,象征纯洁、高雅,常常用来比喻人的高尚品德,历来是诗人画家创作的重要题材。荷花盛开的地方也是许多摄影爱好者经常光顾之地。
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5、 复合题
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 center.
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6、 复合题
Section C Directions: There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A, B, C and D. You should decide on the best choice and mark the corresponding letter on Answer Sheet 2 with a single line through the centre. Passage One Questions 46 to 50 are based on the following passage. “The dangerous thing about lying is people don't understand how the act changes us.” says Dan Ariely behavioural psychologist at Duke University. Psychologists have documented children lying as early as the age of two. Some experts even consider lying a developmental milestone, like crawling and walking, because it requires sophisticated planning, attention and the ability to see a situation from someone else’s perspective to manipulate then. But, for most people, lying gets limited as we develop a sense of morality and the ability to self-regulate. Harvard cognitive neuroscientist Joshua Greene says, for most of us, lying takes work. In studies, he gave subjects a chance to deceive for monetary gain while examining their brains in a functional MRI machine, which maps blood flow to active parts of the brain. Some people told the truth instantly and instinctively. But others opted to lie, and they showed increased activity in their frontal parietal (颅腔壁的) control network, which is involved in difficult or complex thinking. This suggests that they were deciding between truth and dishonesty—and ultimately opting for the letter. For a follow-up analysis, he found that people whose neural (神经的) reward centers were more active when they won money were also more likely to be among the group of liars – suggesting that lying may have to do with the inability to resist temptation. External conditions also matter in terms of when and how often we lie. We are more likely to lie, when we are able to rationalise it, when we are stressed and fatigued or see others being dishonest. And we are less likely to lie when we have moral reminders or when we think others are watching. “We as a society need to understand that, when we don’t punish lying, we increase the probability it will happen again.” Ariely says. In a 2016 study published in the journal Nature Neuroscience, Ariely and colleagues showed how dishonesty alters people’s brains, making it easier to tell ties in the future. When people uttered a falsehood, the scientists notice a burst of activity in their amygdala. The amygdala is crucial part of the brain that produces fear, anxiety and emotional responses— including that sinking, guilty feeling you get when you lie. But when scientists had their subjects play a game in which they won money by deceiving their partner, they noticed the negative signals from the amygdala began to decrease. Not only that, but when people faced no consequences for dishonesty, their falsehood tended to get even more sensational. This means that if you give people multiple opportunities to lie for their own benefit, they start with little lies which get bigger over time.
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7、 复合题
Passage Two Questions 51 to 55 are based on the following passage. Here’s how the Pacific Northwest is preparing for “The Big One”. It’s the mother of all disaster drills for what could be the worst disaster in American history. California has spent years preparing for “The Big One”—the inevitable earthquake that will undoubtedly unleash all kinds of havoc along the famous San Andreas fault (断层). But what if the fault that runs along the Pacific Northwest delivers a gigantic earthquake of its own? If the people of the Cascadia region have anything to do with it, they won’t be caught unawares. The region is engaged in a multi-day earthquake-and-tsunami (海啸) drill involving around 20,000 people. The Cascadia Rising drill gives area residents and emergency responders a chance to practice what to do in case of a 9.0 magnitude earthquake and tsunami along one of the nation’s dangerous—and underestimated—faults. The Cascadia Earthquake Zone is big enough to compete with San Andreas (it’s been called the most dangerous fault in America), but it’s much lesser known than its California cousin. Nearly 700 miles long, the earthquake zone is located by the North American Plate off the coast of Pacific British Columbia, Washington, Oregon and Northern California. Cascadia is what’s known as a “megathrust” fault. Megathrusts are created in earthquake zones—land plate boundaries where two plates converge. In the areas where one plate is beneath another, stress builds up over time. During a megathrust event, all of that stress releases and some of the world’s most powerful earthquakes occur. Remember the 9.1 earthquake and tsunami in the Indian Ocean off Sumatra in 2004? It was caused by megathrust event as the India plate moved beneath the Burma micro-plate. The last time a major earthquake occurred along the Cascadia fault was in 1700, so officials worry that another event could occur any time. To prevent that event from becoming a catastrophe, first responders will join members of the public in rehearsals that involve communication, evacuation, search and rescue, and other scenarios. Thousands of casualties are expected if a 9.0 earthquake were to occur. Fist, the earthquake would shake metropolitan areas including Seattle and Portland. This could trigger a tsunami that would create havoc along the coast. Not all casualties can necessarily be prevented—but by coordinating across local, state, and even national borders, officials hope that the worst-case scenario can be averted. On the exercise’s website, officials explain that the report they prepare during this rehearsal will inform disaster management for years to come. For hundreds of thousands of Cascadia residents. “The Big One” isn’t a question of if, only when. And it’s never too early to get ready for the inevitable.
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8、 填空题
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. Questions26to35 are based on the following passage. A) alleviate B) apparently C arrogant D) associated E) circumstances F) competitive G) conceded H) consciousness I) desires J) excluded K) feature L) lonely M) separate N) spectacularly O) warrant The number of devices you can talk to is multiplying—first it was your phone, then your car, and now you can tell your kitchen appliance what to do. But even without gadgets that understand our spoken commands, research suggests that, as bizarre as it sounds, under certain ___, people regularly ascribe human traits to everyday objects. Sometimes we see things as human because we are ___. In one experiment, people who reported feeling isolated were more likely than others to attribute ___ to various gadgets. In turn, feeling close to objects can ___ loneliness. When college students were reminded of a time they had been ___ in a social setting they compensated by exaggerating their number of friends—unless they were first given tasks that caused them to interact with their phone as if it had human qualities. The phone ___ stood in for real friends. At other times, we personify products on an effort to understand them. One study found that three in four respondents yelled at their computer. Further, the more their computer gave them problems, the more likely the respondents were to report that it had its own “beliefs and ___”. So how do people assign traits to an object? In part, we rely on looks. On humans, wide faces are ___ with dominance. Similarly, people rated cars, clocks and watches with wide faces as more dominant-looking than narrowfaced ones, and preferred them—especially in ___ situations. An analysis of car sales in Germany found that cars with grilles (护栅) that were up turned like smiles sold best. The purchasers saw this ___ as increasing a car's friendliness.
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9、 填空题
Section B Directions: In this section, you are going to read a passage with ten statements attached to it. Each statement contains information given in one of the paragraphs. Identify the paragraph from which the information is derived. You may choose a paragraph more than once. Each paragraph is marked with a letter. Answer the questions by marking the corresponding letter on Answer Sheet 2. How Much Protein Do You Really Need? A) The marketing is enticing: Get stronger muscles and healthier bodies with minimal effort by adding protein powder to your morning shake or juice drink. Or grab a protein bar at lunch or for a quick snack. Today, you can find protein supplements everywhere-online, at the pharmacy grocery store, or health food store. They come in powders, pills, and bars. With more than $12 billion in sales this year, the industry is booming and, according to the market research company, Grand View Research, is on track to sell billions more by 2025. But do we really need all this supplemental protein? It depends. There are pros, cons and some ho-hums to consider. B) For starters, protein is critical for every cell in our body. It helps build nails, hair, bones, and muscles. It can also help you feel fuller longer than eating foods without protein. And, unlike nutrients that are found only in a few foods, protein is pretty much ubiquitous. “The typical American diet is a lot higher in protein than a lot of us think,” says registered dietitian Angela Pipitone with Johns Hopkins McKusick-Nathans Institute of Genetic Medicine. She says it's in foods many of us expect, such as beef, chicken, and other types of meat and dairy. But it's also in foods that may not come immediately to mind like vegetables, fruit, beans and grains. C) The U.S. government’s recommended daily allowance (RDA) for the average adult is 50 to 60 grams of protein a day. This may sound like a lot, but Pipitone says: “We get bits of protein here and there and that really adds up throughout the day.” Take, for example, breakfast. If you ate two eggs topped with a little bit of cheese and an orange on the side, you already have 22 grams of protein. Each egg gives you 7 grams; the cheese gives you around 6 grams and the orange - about 2 grams. Add a lunch of chicken, rice, and broccoli, and you are already over the recommended 50 grams. “You can get enough protein and meet the RDA before you even get to dinner,” says Pipitone. D) So if it’s so easy to get your protein in food, why add more in the form of powders, snack bars or a boost at your local juice bar? No need to, says Pipitone because, in fact, most of us already get enough protein in our diet. “Whole foods are always the best option rather than adding supplements,” she says, noting the FDA does not regulate supplements as stringently as foods or drugs, so there could be less protein, more sugar, and some additives you wouldn’t expect, such as caffeine and even steroids. E) If you are considering a supplement, read the list of ingredients, she says although this is not always foolproof. “I’ve seen very expensive protein supplements that claim to be high quality but they might not really be beneficial for the average healthy adult,” she says. “It could just be a waste of money.” F) But there are certain situations that do warrant extra protein. “Anytime you’re in an anabolic state or building muscle,” Pipitone says, such as if you’re an extreme endurance athlete, training for a marathon, or you’re a body builder. If you’re moderately exercising for 150 minutes a week, as the Centers for Disease Control and Prevention recommends, or less than that, you’re probably not an extreme athlete. Extreme athletes expend lots of energy breaking down and repairing and building muscles. Protein can give them the edge they need to speed along that process. G) Vegans can benefit from protein supplements since they do not eat animal-based protein sources like meat, dairy, or eggs. And, for someone always on-the-go who may not have time for a meal, a protein snack bar can be a good option for occasional meal replacement. Also, individuals recovering from surgery or an injury can also benefit from extra protein. So, too, can older people. At around age 60, “muscles really start to break down,” says Kathryn Starr, an aging researcher at Duke University School of Medicine, “and because of that, in addition to the fact that as we get older our body's ability to break down protein is reduced, the protein needs of an older adult actually increases.” H) In fact, along with her colleague Connie Bales, Starr recently conducted a small study that found that adding extra protein foods to the diet of obese older individuals who were trying to lose weight strengthened their muscles. Participants in the study were separated into two groups—one group was asked to eat 30 grams of protein per meal in the form of whole foods. That meant they were eating 90 grams of protein a day. The other group—the control group—was put on a typical low-calorie diet with about 50 to 60 grams of protein a day. I) After six months, researchers found the high protein group had significantly improved their muscle function —almost twice as much as the control group. “They were able to walk faster, had improved balance, and were also able to get up out of a chair faster than the control group,” Starr says. All 67 participants were over 60 years of age, and both groups lost about the same amount of weight. Starr is now looking into whether high-protein diets also improve the quality of the muscle itself in seniors. She's using CT scans to measure muscle size and fat, and comparing seniors on a high-protein diet to those on regular diets. She says her findings should be available in a couple of months. J) In the meantime, 70-year-old Corliss Keith, who was in the high protein group in Starr’s latest study, says she feels a big difference. “I feel excellent,” she says, “I feel like I have a different body, I have more energy, I'm stronger.” She says she is able to take Zumba exercise classes three times a week, work out on the treadmill and take long, brisk walks. Keith also lost more than 15 pounds. “I'm a fashionable person, so now I'm back in my three-inch heels,” she says. K) As people age, researcher Starr says muscle strength is key to helping them stay strong and continue living on their own in their own home. “I feel very much alive now,” says Keith, “I feel like I could stay by myself until I'm 100.” L) But can people overdo protein? Pipitone says you do have to be careful. Too much protein can cause nausea, cramps, headaches, fatigue, and bloating. Dehydration is also a risk when you eat too much protein. Pipitone says if you increase protein, you also have to increase your fluid intake. “I always tell people to make sure they're drinking enough fluids,” which for the average person is 60 to 70 ounces a day, which translates into eight 8-ounce glasses of water or liquid per day. M) There have been some indications that extra protein makes the kidneys work harder which could be problematic for individuals with a history of kidney disease and for them, the supplements may increase the risk of kidney stones, she says. N) Bottom Line: if you think you need more protein in your diet, consider these questions: Are you are an extreme athlete; are you recovering from injury or surgery; or are you are 60 years or older? If so, adding high protein foods like eggs and meat products to your diet can be beneficial. And, if you're not sure, it is always a good idea to check with your primary care provide. ___ It is quite easy for one to take in the recommended amount of protein. ___ Pipitone claims that healthy adults need not spend money on protein supplements. ___ The protein supplement business is found to be thriving. ___ Protein can speed the repairing of damaged muscles. ___ Protein supplements may overburden some internal organ, thus leading to its malfunctioning. ___ Older adults need to take in more protein to keep their muscles strong. ___ Protein is found in more foods than people might realize. ___ Additional protein was found to help strengthen the muscles of overweight seniors seeking weight loss. ___ Pipitone believes that whole foods provide the best source of protein. ___ People are advised to drink more liquid when they take in more protein.
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10、 问答题
Part I Writing (30 minutes) Directions: For this part, you are allowed 30 minutes to write an essay on the importance of having a sense of family responsibility. You should write at least 150 words but no more than 200 words.