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[主观题]

请阅读Passage l。完成第小题。 Teaching children to read well from the start is the most impo

请阅读Passage l。完成第小题。

Teaching children to read well from the start is the most important task of elementary schools. But relying on educators to approach this task correctly can be a great mistake. Many schools continue to employ instructional methods that have been proven ineffective. The staying power of the "look-say" or "whole-word" method of teaching beginning reading is perhaps the most flagrant example of this failure to instruct effectively.

The whole-word approach to reading stresses the meaning of words over the meaning of letters， thinking over decoding， developing a sight vocabulary of familiar words over developing the ability to unlock the pronunciation of unfamiliar words. It fits in with the self-directed，"learning how to learn" activities recommended by advocates of "open" classrooms and with the concept that children have to be developmentally ready to begin reading. Before 1963， no major publisher put out anything but these "Run-Spot-Run" readers.

However， in 1955， Rudolf Flesch touched off what has been called "the great debate" in beginning reading. In his best-seller Why Johnny Can"t Read， Flesch indicted the nation"s public schools for miseducating students by using the look-say method. He said——and more scholarly studies by Jeane Chall and Rovert Dykstra later confirmed——that another approach to beginning reading， founded on phonics， is far superior.

Systematic phonics first teaches children to associate letters and letter combinations with

sounds; it then teaches them how to blend these sounds together to make words. Rather than building up a relatively limited vocabulary of memorized words， it imparts a code by which the pronunciations of the vast majority of the most common words in the English language can be learned. Phonics does not devalue the importance of thinking about the meaning of words and sentences; it simply recognizes that decoding is the logical and necessary first step.

The author feels that counting on educators to teach reading correctly is_________. 查看材料

A. only logical and natural

B. the expected position

C. probably a mistake

D. merely effective instruction

答案

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发布时间：2019-09-10

更多“请阅读Passage l。完成第小题。 Teaching children to read well from the start is the most impo”相关的问题

第1题

请阅读Passage l。完成第21—25小题。Passage 1It"s one of our common beliefs that mice are afra

请阅读Passage l。完成第21—25小题。

Passage 1

It"s one of our common beliefs that mice are afraid of cats. Scientists have long known that even if a mouse has never seen a cat before， it is still able to detect chemical signals released from it and run away in fear. This has always been thought to be something that is hard-wired into a mouse s brain.

But now Wendy Ingram， a graduate student at the University of California， Berkeley， has challenged this common sense. She has found a way to"cure" mice of their inborn fear of cats by infecting them with a parasite， reported the science journal Nature.

The parasite， called Toxoplasma gondii， might sound unfamiliar to you， but the shocking fact is that up to one-third of people around the world are infected by it. This parasite can cause different diseases among humans， especially pregnant women——it is linked to blindness and the death of unborn babies.

However， the parasite"s effects on mice are unique. Ingram and her team measured how mice reacted to a cat"s urine（尿） before and after it was infected by the parasite. They noted that normal mice stayed far away from the urine while mice that were infected with the parasite walked freely around the test area.

But that"s not all. The parasite was found to be more powerful than originally thought—even after researchers cured the mice of the infection. They no longer reacted with fear to a cat"s smell，which could indicate that the infection has caused a permanent change in mice"s brains.

Why does a parasite change a mouse"s brain instead of making it sick like it does to humans？

The answer lies in evolution.

"It"s exciting scary to know how a parasite can manipulate a mouse"s brain this way，" Ingram said. But she also finds it inspiring."Typically if you have a bacterial infection， you go to a doctor and take antibiotics and the infection is cleared and you expect all the symptoms to also go away."

She said， but this study has proven that wrong."This may have huge implications for infectious disease medicine."

The passage is mainly about__________. 查看材料

A.mice" s inborn terror of cats

B.the evolution of Toxoplasma

C.a new study about the effects of a parasite on mice

D.a harmful parasite called Toxoplasma gondii

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第2题

请阅读Passage l。完成第小题。 Every year， the Nobel Prize is given to outstanding work in si

请阅读Passage l。完成第小题。

Every year， the Nobel Prize is given to outstanding work in six fields: physics， chemistry， medicine， literature， economics， and work in peace. These prizes are named after Alfred Nobel， who asked for the Nobel Foundation to be made in his will. He was an inventor and businessman.

Nobel was born in Stockholm， Sweden in 1883. His father， Immanuel Nobel has periods of success in building bridges and periods of not making any money. Immanuel sent Alfred to study chemistry in Paris. Alfred met Ascanio Sobrero， who found the liquid nitroglycerine， a liquid that explodes very easily. Alfred thought about making use of nitroglycerine in the construction of bridges and tunnels. An accident happened during the experiment with the liquid， causing an explosion， which killed and injured several people， including his brother. He continued looking for ways to make this liquid not explode so easily.

Nobel was successful in finding a safe way to store the liquid and in 1864 began producing huge amounts of it. He found that mixing it with kind of sand would turn the liquid into a paste. He then wanted to shape the paste into rods that would make it easy to blow up rock when building a tunnel. In 1867， he patented the material as dynamite. This patent greatly reduced the costs of blasting rock and drilling tunnels. As a businessman， Nobel set up laboratories that made dynamite in 90 locations in more than 20 countries. Although dynamite was useful in construction， many people used it as a weapon in war.

At age 43， the wealthy and lonely businessman put an ad in the newspaper for a secretary though he was really looking for a wife. Bertha Kinsky worked as his secretary for a short time， but married another man and became Bertha von Suttner. Bertha and Alfred remained friends and wrote letters many years later. She most likely influenced him to strive for peace. She published a novel Lay Down Your Arms! in 1859 and became a leading figure in the peace movement. For these reasons， she was awarded the Nobel Peace Prize in 1905.

Alfred Nobel‘s family 查看材料

A. designed buildings that could survive explosions

B. continued to aid Ascanio Sobrero in his researches

C. was constantly successful in whatever enterprise they took on

D. had times in which they struggles for money and earned a lot of money

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第3题

请阅读Passage l。完成第小题。 Shoppers on Black Friday， the traditional start of the holiday

请阅读Passage l。完成第小题。

Shoppers on Black Friday， the traditional start of the holiday shopping season in America， are notoriously aggressive. Some even start queuing outside stores before dawn to be the first to lay their hands on heavily discounted merchandise. Despite the frenzy at many stores， however， the recession appears to have accelerated the pace at which shoppers are abandoning bricks and mortar（传统实体商场） in favor of online retailers——e-tailers. So this year Black Friday （so named because it is supposed to put shops into profit for the year） also marks the start of many conventional retailers" attempts to regain the initiative.

E-commerce holds particular appeal in straitened times as it enables people to compare pries across retailers quickly and easily. Buyers can sometimes avoid local sales taxes online， and shipping is often free. No wonder， then， that online shopping continues to grow even as the offline sort shrinks.

The shift in spending to the Internet is good news for companies like P&G that lack retail outlets of their own. But it is a big concern for bricks-and-mortar retailers， whose prices are often higher than those of e-tailers， since they must bear the extra expense of running stores. Happily， however， conventional retailers are in a better position to fight back than last year， when overstocking forced them to resort to ruinous discounting.

The most obvious response to the growth of e-tailing is for conventional retailers to redouble their own efforts online. The online arms of big retailers are performing well， on the whole. Retailers are also trying to make shopping seem fun and exciting to counteract the economic gloom. One common tactic is to set up "pop-up" stores， which appear for a short time before vanishing again， to foster a sense of novelty and urgency. Following the lead of many bricks-and-mortar outfits， eBay recently launched a pop-up in New York where customers could inspect items before ordering them.

Stores are also trying to lure customers by offering services that are not available online. Best Buy， a consumer-electronics retailer， has started selling music lessons along with its musical instruments. Lululemon Athletica， which sells sports clothes， offers free yoga classes. The idea is to bring people back to its shops regularly， increasing the likelihood that they will develop the habit of shopping there.

Why is the recession of conventional business accelerating？查看材料

A. Because conventional retailers don"t care for their customers.

B. Because more people are waiting for the best bargain.

C. Because stores compete by offering discounted merchandise.

D. Because many customers begin to favor shopping onhne.

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第4题

请阅读Passage 1，完成第小题。 So long as teachers fail to distinguish between teaching a

请阅读Passage 1，完成第小题。

So long as teachers fail to distinguish between teaching and learnin9，they will continue to undeaake to do for children that which only children can do for themselves．Teaching children to read is not passing reading on to them．It is certainly not endless hours spent in activities about reading．Douglas insists that reading cannot be taught directly and schools should stop trying to do the impossible．”

Teaching and learning are two entirely different processes．They differ in kind and function． The funetion of teaching is to create the conditions and the climate tllat will make it possible for children to devise the most efficient system for teaching themselves to read．Teaching is also a public activity：It can be seen and observed．

Learning to read involves all that each individual does to make sense of the word of printed language．Almost all of it is private，for learning is an occupation of the mind，and that process is not open to public scrutiny．If teacher and learner roles are not interchangeable，what then can be done through teaching that will aid the child in the quest for knowledge？ Smith has one principal rule for all instructions．“Make learning to read easy，which means and frequent experience for children． making reading a meaningful，teaching enjoyable

When the roles of teacher and learner are seen for what they are，and when both teacher and learner fulfill them appropriately，then much of the pressure and feeling of failure for both is eliminated．Learning to read is made easier when teachers create an environment where children are given the opportunity to solve the problem of learning to read by reading．

The problem with the reading course as mentioned in the first paragraph is that__________. 查看材料

A.it is one of the most difficult school courses

B.students spend endless hours in reading

C.reading tasks are assigned with little guidance

D.too much time is spent on teaching about reading

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第5题

请阅读Passage l。完成第21～25小题。 Passage 1They came to the United States as children with

请阅读Passage l。完成第21～25小题。

Passage 1

They came to the United States as children with little idea， if any， of what it meant to overstay a visa. They enrolled in public schools， learned English， earned high school diplomas. Like many of their classmates， they pondered college choices. But as undocumented immigrants in Maryland， they then had to confront the reality that they must pay two to three times what former high school classmates pay to attend the state"s public colleges. It is a rule that， for many students of modest means， puts a college education out of reach， with one exception : Montgomery College.

That is why Josue Aguiluz， 21， born in Honduras， and Ricardo Campos， 23， born in E1 Salvador——and numerous others like them——landed at the community college. There， they study and wait for a verdict from Maryland voters on a Nov. 6 ballot measure that may determine whether they can afford to advance to a four-year college.

"I know people in Maryland believe in education，" Campos said the other day at the student center on the Rockville campus. "I know they are going to vote for Question 4. I"m hanging on their vote."

Question 4 asks voters to affirm or strike down a law that the legislature passed last year，known as Maryland"s version of the "Dream Act，" which granted certain undocumented immigrants the ability to obtain in-state tuition at public colleges and universities. The subsidy comes with conditions. Among them: To take advantage， students must first go to a two-year community college.

The law was pushed to a referendum after opponents mounted a lightning petition drive that showed the depth of division over illegal immigration across the state and the nation. Critics say discounting tuition for students who lack permission to be in the country is an unjustified giveaway of what they believe will amount to tens of millions of tax dollars a year.

"When an undocumented student enters the system， it is a net loss of revenue，" said Del.

Patrick L. McDonough. "It is a simple mathematical argument. Put your emotion and your passion aside， and get out your calculator."

There is no count of the number of students statewide who would be eligible for benefits under the law. Estimates range from several hundred to a few thousand.

A Washington Post poll this month found that a solid majority of likely voters favored the law:

59 percent support it， and 35 percent are opposed. If the law is affirmed， Maryland would join about a dozen other states with laws or policies providing in-state tuition benefits to undocumented immigrants. Texas became the first in 2001.

Experts say Maryland"s version is the only one that requires students to go through community college first. That means the state"s 16 community colleges could become a pipeline for undocumented students in public higher education if the measure is approved.

Montgomery College is already a magnet for such students. It offers the same low tuition to any student who graduated within the past three years from a Montgomery County high school.

What reality did the undocumented immigrants in Maryland have to confront？查看材料

A.It is impossible for them to get college education.

B.They cannot afford to study in Montgomery College.

C.They must pay more tuition than their peers to get high school diplomas.

D.They must pay more tuition than their peers at the state"s public colleges.

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第6题

请阅读Passage 2。完成第26-30小题。 Passage 2Reality television is a genre of television prog

请阅读Passage 2。完成第26-30小题。

Passage 2

Reality television is a genre of television programming which， it is claimed， presents unscripted dramatic or humorous situations， documents actual events， and features ordinary people rather than professional actors. It could be described as a form. of artificial or "heightened"documentary. Although the genre has existed in some form. or another since the early years of television， the current explosion of popularity dates from around 2000.

Reality television covers a wide range of television programming formats， from game or quiz shows which resemble the frantic， often demeaning programmes produced in Japan in the 1980s and 1990s （a modern example is Gaki No Tsukai）， to surveillance-or voyeurism-focused productions such as Big Brother.

Critics say that the term "reality television" is somewhat of a misnomer and that such shows frequently portray a modified and highly influenced form. of reality， with participants put in exotic locations or abnormal situations， sometimes coached to act in certain ways by off-screen handlers，and with events on screen manipulated through editing and other post-production techniques.

Part of reality television"s appeal is due to its ability to place ordinary people in extraordinary situations. For example， on the ABC show， The Bachelor， an eligible male dates a dozen women simultaneously， travelling on extraordinary" dates to scenic locales. Reality television also has the potential to turn its participants into national celebrities， outwardly in talent and performance programs such as Pop Idol， though frequently Survivor and Big Brother participants also reach some degree of celebrity.

Some commentators have said that the name "reality television" is an inaccurate description for several styles of program included in the genre. In competition-based programs such as Big Brother and Survivor， and other special-living-environment shows like The Real World， the producers design the format of the show and control the day-to-day activities and the environment，creating a completely fabricated world in which the competition plays out. Producers specifically select the participants， and use carefully designed scenarios， challenges， events， and settings to encourage particular behaviours and conflicts. Mark Burnett， creator of Survivor and other reality shows， has agreed with this assessment， and avoids the word "reality" to describe his shows; he has said， "I tell good stories. It really is not reality TV. It really is unscripted drama."

In the first line， the writer says "it is claimed" because__________. 查看材料

A.they agree with the statement

B.everyone agrees with the statement

C.no one agrees with the statement

D.they want to distance themselves from the statement

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第7题

请阅读Passage l。完成第21—25小题。Passage 1 Unless you spend much time sitting in a college

请阅读Passage l。完成第21—25小题。

Passage 1

Unless you spend much time sitting in a college classroom or browsing through certain areas of the Internet， it"s possible that you had not heard of trigger warnings until a few weeks ago， when they made an appearance in the Times. The newspaper explained that the term refers to preemptive alerts， issued by a professor or an institution at the request of students， indicating that material presented in class might be sufficiently graphic to spark symptoms of post-traumatic-stress disorder.

The term seems to have originated in online feminist forums， where trigger warnings have for some years been used to flag discussions of rape or other sexual violence. The Times piece， which was skeptically titled "Warning: The Literary Canon Could Make Students Squirm，" suggested that trigger warnings are moving from the online fringes to the classroom， and might be more broadly applied to highlight in advance the distress or offense that a work of literature might cause.

"Huckleberry Finn" would come with a warning for those who have experienced racism; "The Merchant of Venice" would have an anti-Semitism warning attached. The call from students for trigger warnings was spreading on campuses such as Oberlin， where a proposal was drafted that would advise professors to"be aware of racism， classism， sexism， and other issues of privilege and oppression" in devising their syllabi; and Rutgers， where a student argued in the campus newspaper that trigger warnings would contribute to preserving the classroom as a"safe space" for students.

Online discussion of trigger warnings has sometimes been guardedly sympathetic， sometimes critical. Jessica Valenti has noted on The Nation"s website that potential triggers for trauma are so manifold as to be beyond the possibility of cataloguing : "There is no trigger warning for living your life." Some have suggested that a professor"s ability to teach would be compromised should it become commonplace for"The Great Gatsby" to bear a trigger warning alerting readers to the disgusting characters and incidents within its pages. Others have worried that trigger-warning advocates， in seeking to protect the vulnerable， run the risk of disempowering them instead.

"Bending the world to accommodate our personal frailties does not help us overcome them"， Jenny Jarvie wrote on The New Republic"s online site.

Jarvie"s piece， like many others on the subject， cited the University of California， Santa Barbara， as a campus where champions of trigger warnings have made significant progress. Earlier this year， students at U.C.S.B. agreed upon a resolution recommending that such warnings be issued in instances where classroom materials might touch upon "rape， sexual assault， abuse， self-injurious behavior， suicide， and graphic violence". The resolution was brought by a literature student who said that， as a past victim of sexual violence， she had been shocked when a teacher showed a movie in class which depicted rape， without giving advance notice of the content. The student hoped to spare others the possibility of experiencing a post-traumatic-stress reaction.

The trigger-warning debate may， by comparison， seem hard to understand; but express a larger cultural preoccupation with achieving safety， and a fear of living in its absence. The hope that safety might be found， as in a therapist"s office， in a classroom where literature is being taught is in direct contradiction to one purpose of literature， which is to give expression through art to difficultanduncomfortableideas，andtherebytoenlargethereader"sexperienceand comprehension. The classroom can never be an entirely safe space， nor， probably， should it be. But it"s difficult to fault those who hope that it might be， when the outside world constantly proves itself pervasively hostile， as well as， on occasion， horrifically violent.

Which of the following groups of people are most in favor of "trigger warnings"？查看材料

A.Students.

B.Reporters.

C.Feminists.

D.Professors.

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第8题

请阅读Passaqe l，完成第21～25小题。 Passage 1Among the throngs of Americans prowling the mal

请阅读Passaqe l，完成第21～25小题。

Passage 1

Among the throngs of Americans prowling the malls and trawling e-commerce sites， many are looking out for themselves. Retail-research firm NPD Group said， thus far， about one third of consumers have engaged in what is called self-gifting. That"s up from 12 percent in a typical pre-recession year， and up from the 19 percent who said they planned to do so last year. The National Retail Federation， the dispenser of all holiday-related data， said in 2012， nearly 60 percent of shoppers would do so.

The latest step in the evolution of our burgeoning culture of narcissism？ Yes. Self-gifting makes psychological and economic sense given what Americans have endured these years.

THE POST-BUST（破产） era has been a long， hard， heroic slog of balance-sheet improvement.

Americans have labored to save money and hack away at the huge mountain of debt they accumulated during the credit boom. According to the New York Federal Reserve， consumers have knocked down their aggregate debt load from $12.67 trillion in the third quarter of 2008 to $11.31 trillion in the third quarter of 2012; credit-card debt is off $192 billion from the peak. Americans have cut their load by spending more carefully and engaging in that most un-American of traits:

self-abnegation.

After living frugally for so much of the year and for so many years who can blame a parent at an Apple Store for buying herself a new iPad？ Indeed， self-gifting may actually be a function of the new abstemiousness. Let"s say you"ve been holding off on replacing your old television. Why not buy it around November or December when insane promotions and free shipping are available？

Besides， it"s not like self-gifters are solely interested in self-pleasure. An NRF survey said that the typical self-gifter would spend about $140 on himself this year. For comparison"s sake， the survey said the typical shopper would spent about $750 in all.

After a long period of economic madness（remember the housing bubble and the dotcom mess），self-gifting is a sign of much-needed economic rationality. Shopping for others involves a certain amount of wrong guesswork with negative financial consequence. This year， for example， CEB TowerGroup claims that Americans will load $110 billion onto gift cards and give them as presents.

But the market-research firm says that about 1.6 percent of that total， about $1.7 billion， will go unused. Meanwhile， a large percentage of gifts wind up getting returned. Adults surveyed by BIG insight in November 2012 found that 35 percent of people reported returning at least some of their gifts. Returns induce guilt and raise the specter of uncomfortable conversations about what happened to that giant striped sweater. But more significant， returns are bad for the environment.

They lead to more trips to the mall， higher shipping costs， and the unnecessary use of packaging materials.

These days， the rise of e-commerce means shopping is now antiseptic: sit and click. With the charm gone， we have to come up with other ways to make the experience pleasurable.

As the song goes， "Have yourself a merry little Christmas".

What have the retail research and surveys revealed about self-gifting？查看材料

A.It hasn"t helped improve balance sheets.

B.It is an age-old practice for most Americans.

C.It has been on the rise since the recent recession began.

D.It has reflected the American tradition of self-abnegation.

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第9题

请阅读Passage 1，完成第小题。 Passage 1The British Medical Journal recently featured a stron

请阅读Passage 1，完成第小题。

Passage 1

The British Medical Journal recently featured a strong response to what was judged an inappropriately lenient reaction by a medical school to a student cheating in an examination.

Although we have insufficient reliable data about the extent of this phenomenon， its prevention， or its effective management， much can be concluded and acted upon on the basis of common sense and concepts with face validity.

There is general agreement that there should be zero tolerance of cheating in a profession based on trust and one on which human lives depend. It is reasonable to assume that cheaters in medical school will be more likely than others to continue to act dishonestly with patients，colleagues， insurers， and government.

The behaviours under question are multifactorial in origin. There are familial， religious， and cultural values that are acquired long before medical school. For example， countries， cultures， and subcultures exist where bribes and dishonest behaviour are almost a norm. There are secondary schools in which neither staff nor students tolerate cheating and others where cheating is rampant;there are homes which imbue young people with high standards of ethical behaviour and others which leave ethical training to the harmful influence of television and the market place.

Medical schools reflect society and cannot be expected to remedy all the ills of a society. The selection process of medical students might be expected to favour candidates with integrity and positive ethical behaviour——if one had a reliable method for detecting such characteristics in advance. Medical schools should be the major focus of attention for imbuing future doctors with integrity and ethical sensitivity. Unfortunately there are troubling， if inconclusive， data that suggest that during medical school the ethical behaviour of medical students does not necessarily improve;indeed， moral development may actually stop or even regress.

The creation of a pervasive institutional culture of integrity is essential. It is critical that the academic and clinical leaders of the institution set a personal example of integrity. Medical schools must make their institutional position and their expectations of students absolutely clear from day one. The development of a school"s culture of integrity requires a partnership with the students in which they play an active role in its creation and nurturing. Moreover， the school"s examination system and general treatment of students must be perceived as fair. Finally， the treatment of infractions must be firm， fair， transparent， and consistent.

What does the author say about cheating in medical schools？查看材料

A.Extensive research has been done about this phenomenon.

B.We have sufficient data to prove that prevention is feasible.

C.We are safe to conclude that this phenomenon exists on a grand scale.

D.Reliable data about the extent， prevention and management of the phenomenon is lacking.

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第10题

请阅读Passage l，完成第21—25小题。 Passage 1Move over Methuselah. Future generations could b

请阅读Passage l，完成第21—25小题。

Passage 1

Move over Methuselah. Future generations could be living well into their second century and still doing Sudoku， if life expectancy predictions are true. Increasing by two years every decade，they show no signs of flattening out. Average lifespan worldwide is already double what it was 200 years ago. Since the 1980s， experts thought the increase in life expectancy would slow down and then stop， but forecasters have repeatedly been proved wrong.

The reason behind the steady rise in life expectancy is "the decline in the death rate of the elderly"， says Professor Tom Kirkwood from Newcastle University. He maintains that our bodies are evolving to maintain and repair themselves better and our genes are investing in this process to put off the damage which will eventually lead to death. As a result， there is no ceiling imposed by the realities of the ageing process. "There is no use-by-date when we age. Ageing is not a fixed biological process，" Tom says.

A large study of people aged 85 and over carried out by Professor Kirkwood discovered that there were a remarkable number of people enjoying good health and independence in their late 80s and beyond. With people reaching old age in better shape， it is safe to assume that this is all due to better eating habits， living conditions， education and medicine.

There are still many people who suffer from major health problems， but modern medicine means doctors are better at managing long-term health conditions like diabetes， high blood pressure and heart disease. "We are reaching old age with less accumulative damage than previous generations. We are less damaged，" says Professor Kirkwood. Our softer lives and the improvements in nutrition and healthcare have had a direct impact on longevity.

Nearly one-in-five people currently in the UK will live to see their 100th birthday， the Office for National Statistics predicted last year. Life expectancy at birth has continued to increase in the UK——from 73.4 years for the period 1991 to 1993 to 77.85 years for 2007 to 2009. A report in Science from 2002 which looked at life expectancy patterns in different countries since 1840 concluded that there was no sign of a natural limit to life.

Researchers Jim Oeppen and Dr. James Vaupel found that people in the country with the highest life expectancy would live to an average age of 100 in about six decades. But they stopped short of predicting anything more.

"This is far from eternity: modest annual increments in life expectancy will never lead to immortality，" the researchers said.

We do not seem to be approaching anything like the limits of life expectancy， says Professor David Leon from the London School of Hygiene and Tropical Medicine. "There has been no flattening out of the best of the best——the groups which everyone knows have good life expectancy and low mortality，" he says.

These groups， which tend to be in the higher social and economic groups in society， can live for several years longer than people in lower social groups， prompting calls for an end to inequalities within societies.

Within populations， genes also have an important role to play in determining how long we could survive for——but environment is still the most important factor.

It is no surprise that healthy-living societies like Japan have the highest life expectancies in the world. But it would still be incredible to think that life expectancy could go on rising forever. "I would bet there will be further increases in life expectancy and then it will probably begin to slow，" says Tom， "but we just don"t know."

The purpose of the prediction saying that future generations could be doing Sudoku when they are over 100 is to __________. 查看材料

A.report that doing Sudoku is a healthy living style

B.prove that doing Sudoku helps people move to Methuselah

C.predict that future generations will like Sudoku since it is very popular now

D.indicate that future generations could remain smart and energetic even if they are over 100

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