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Forty May Be the New 30 As Scientists Redefine Age Is 40 really the new 30？ In many way

s people today act younger than their parents did at the same age.

Scientists have defined a new age concept and believe it could explain why populations are aging, but at the same time seem to be getting younger.

Instead of measuring aging by how long people have lived, the scientists have factored in how many more years people can probably still look forward to.

"Using that measure, the average person can get younger in the sense that he or she can have even more years to live as time goes on," said Warren Sanderson of the University of New York in Stony Brook.

He and Sergei Scherbov of the Vienna lnstitute of Demography (人口统计学) at the Austrian (奥地利的) Academy of Sciences, have used their method to estimate how the proportion of elderly people in Germany, Japan and the United States will change in the future.

The average German was 39.9 years old in 2000 and could plan to live for another 39.2 years, according to research reported in the journal Nature on Wednesday.

However, by 2050 the average German will be 51.9 years old and will be expected to live another 37.1 years. So middle age in 2050 would occur at around 52 years instead of 40 years as in 2000.

"As people have more and more years to live they have to save more and plan more and they effectively are behaving as if they were younger," said Sanderson.

Five years ago, the average American was 35.3 years old and could plan for 43.5 more years of life. By 2050, the researchers estimate it will increase to 41.7 years and 45.8 future years.

"A lot of our ski/Is, our education, our savings and the way we dear with our health care depend a great deal on how many years we have to live," said Sanderson.

This dimension of how many years people have to live has been completely ignored in the discussion of aging so far.

第36题：People 40 years of age today seem to be as young as

A．their parents were at the same age.

B．their parents were at the age of 30.

C．their children will be at the same age.

D．their children will be at the age of 30.

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更多“Forty May Be the New 30 As Sci…”相关的问题

第1题

In what now seems like the prehistoric times of computer history, the early post-war e

ra (战后时期) there was a quite widespread concern that computers would take over the world from man one day. Already today, less than forty years later, as computers are relieving us of more and more of the routine tasks in business and in our personal lives, we are facing with a less dramatic but also less foreseen problem. People tend to be over-trusting(过分信任) of computers and are reluctant to challenge their authority. Indeed, they behave as if they were hardly aware that wrong buttons may be pushed, or that a computer may simply malfunction(失灵 ).

(78)Obviously, there would be no point in investing(投入) in a computer if you had to check all its answers, but people should also rely on their own internal computers and check the machine when they have the feeling that something has gone wrong. Questioning and routine double checks must continue to be as much a part of good business as they were in pre-computer days. Maybe each computer should come with the following warning: for all the help this computer may provide, it should not be seen as a substitute for fundamental thinking and reasoning skills.

What is the main purpose of this passage？

A．To look back to the early days of computers.

B．To explain what technical problems may occur with computers.

C．To discourage unnecessary investment in computers.

D．To warn against the blindness to the probable shortcomings of computers.

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第2题

Here is the ticket for______470& to New York. You may go to the airport right now.A．pl

Here is the ticket for______470& to New York. You may go to the airport right now.

A．plane

B．flight

C．train

D．airplane

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第3题

How do students usully feel if they tail some examinations acording to Pssage B?（）

A.They may feel it is a new beginning

B.They may feel it is a nghtmare.

C.They may feel it is not a big deal

D.They may teel it is a blessing in disguise.

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第4题

In the earlier days of computer history, there was a quite widespread concern that compute

rs would take over the world from man one day. Already today, less than forty years later, as computers are relieving us of more and more of the routine tasks in business and in our personal lives, we are faced with a less dramatic but also less foreseen problem. People tend to be over-trusting of the functions of computers and are reluctant to challenge their authority. Indeed, they behave as if they were hardly aware that wrong buttons might be pushed, or that a computer might simply fail to work properly.

Obviously, there would be no point in investing in a computer if you had to check all its answers, but people should also rely on their own internal computers and check the machine when they have the feeling that something had gone wrong. Questioning and routine double checks must continue to be as much a part of good business as they were in pre-computer days. Maybe each computer should come with the following warning: For all the help this computer may provide, it should not be seen as a device that can take the place of fundamental thinking and reasoning skills.

The main purpose of this passage is______.

A．to look back to the early days of computers

B．to explain what technical problems may occur with computers

C．to warn against a mentally lazy attitude towards computers

D．to discourage unnecessary investment in computers

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第5题

It may be concluded that ______.A．computers have been widely used by AmericansB．computers

It may be concluded that ______.

A．computers have been widely used by Americans

B．computers can solve complex problems

C．computers are domestic robots

D．computers are new machines

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第6题

根据以下内容回答题：“CuIture shock”occurS as result of total immersion in a new culture．It

根据以下内容回答题：

“CuIture shock”occurS as result of total immersion in a new culture．It happens to“peo-Dle who haye been suddenly transplanted abroad．”Newcomers may be anxious because they do not speak the language，know the customs，or understand people’s behavior. in daily life．The visitor finds that“yes may not always mean“yes”，that friendliness does not necessarily mean friendship，or that statements that appear to be serious are really intended as jokes．The for-eigner may be unsure as to when to shake hands，when to start conversations，or how to approach a stmnger．The notion of“culture shock”helps explain feelings of bewilderment（困惑）and disorientation．Language problems do not account for all the frustrations（挫败）that people feel．When one is deprived of everything that was once familiar，such as understanding a transportation system，knowing how to register for university classes，Ot knowing how to make friends，difficulties in coping with the new society may arise． “…when an individual enters a strange cuhure，he or she is like fish out of water．”New-comers feel at times that they do not belong to and feel alienated from the native members of thecuhure．When this happens visitors may want t0·reject everything about the new environment and may glorify and exaggerate（夸大）the positive aspects of their own culture．Conversely visitors may scorn their native country by rejecting its values and instead choosing to identify with（if only temporarily）the value of the new country．This may occur as an attempt to over—identify with the new culture in order to be accepted by the people in it．

The expression“he or she is like fish out of water”suggests__________ ．

A.people away from their cultures can hardly survive in a new culture

B.a fish can not survive without water

C.people away from their culture experience mental isolation

D.people away from their culture has difficulties in new environment

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第7题

What is e-books' negative impact on social relationships？A．They create new jobs only for w

What is e-books' negative impact on social relationships？

A．They create new jobs only for writers.

B．Fewer and fewer people have access to new technology.

C．They may threaten some traditional trades.

D．They isolate people from one another.

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第8题

Many people, particularly recent college graduates, dreaming of owning their own businesse

s. Although such ventures are often exciting and profitable, the new entrepreneur should thoroughly investigate and plan the situation before plunging in. The first step should be to assemble a board of advisers, including a lawyer, an accountant, and an insurance representative. These individuals can provide valuable information and counsel. Securing the necessary licenses and permits is also a precondition and may require research to determine what is necessary.

Most successful small business owners have considerable knowledge in the area working for others be fore they become independent. They also begin with substantial financial backing and a good location. Renting space may be preferable or necessary at the start, but the lease on the building must be examined carefully before it is signed. The new owner should be thoroughly familiar with the market and the competition. A person who wants to buy an existing business can often learn the history of the company and its prospects from the owner's records. Once the business gets started, accurate and complete records should be kept to monitor the company's progress and profits.

Financing may be the most difficult step for small-business owners. They may rely on their own savings or borrow money from a bank or the Small Business Administration. Some suppliers will sell merchandise on credit, and manufacturers may be willing to finance the purchase of equipment. If the new business is a corporation, the owner may choose to sell stock.

Once the new business is started, the Small Business Administration is a good source of advice. Several of its programs are designed to help new owners with expertise of retired executives. A nearby university or trade association may also help owners locate local sources of help.

New business owners often report that they work long, hard hours but find the experience extremely satisfying. The realization that their efforts will produce actual results in the form. of profit, success, and pride can be quite motivating. Those who have worked for others enjoy the opportunity to make decisions and follow projects through to completion. Many report that hard work has never been so enjoyable before. Careful research, investigation, and planning at the outset do not guarantee success, but they provide a good foundation for the new small business and its owner.

Before you begin, the most necessary adviser for you is ______.

A．a retired executive

B．a bank officer

C．a lawyer

D．a professor of economics

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第9题

The task of being accepted and enrolled in a university begins early for some students. Lo

ng【C1】______ they graduate from high school . These students take special【C2】______ to prepare for advanced study. They may also take one or more examinations that test how【C3】______ prepared they are for the university. In the final year of high school, they【C4】______ applications and send them, with their student records, to the universities which they hope to【C5】______ . Some high school students may be【C6】______ to have an interview with representatives of the university. Neatly【C7】______ and usually very brightened, they are【C8】______ to show that they have a good attitude and the【C9】______ to succeed.

When the new students are finally【C10】______ ,there may be one more step they have to【C11】______ before registering for classes and【C12】______ to work. Many colleges and universities【C13】______ an orientation program for new students.【C14】______ these programs, the young people get to know the【C15】______ for registration and student advising, university rules, the【C16】______ of the library and all the other【C17】______ services of the college or university.

Beginning a new life in a new place can be very【C18】______ . The more knowledge students have 【C19】______ the school, the easier it will be for them to【C20】______ to the new environment. However, it takes time to get used to college life.

【C1】

A．as

B．after

C．since

D．before

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第10题

Across the United States, scientists are mounting what may become the most innovative agri

cultural research drive since the 1920's, when hybrid corn was developed. Surprisingly, the new genetic revolution is not taking place in America's fields. Instead, it is occurring in biology laboratories, for it involves the deliberate manipulation in test tubes of the genes of crop plants. This genetic engineering may prove the biggest boon to agriculture since plant breeding began.

The new concepts grew out of the bioengineering of bacteria for the production of such things as human hormones and vaccines for viral diseases. Plant cells, however, are far more complex than bacteria, and it will probably take many years for today's encouraging laboratory results to have a major impact on the farm. In fact the payoff may not come until the next century.

But although bio-technologists are still in the earliest phases of this new field of science, they are already actively exploring ways to redesign plants so they will use sunlight mere efficiently, resist viruses and other pests, grow in hot or dry areas, in saline soils or in the presence of pesticides, and perhaps even make their own fertilizer out of nitrogen in the air. In addition, scientists have had early success in making wholly new plants that are unavailable by conventional plant breeding-a potato-tomato combination, for example.

The new technology holds the promise of virtually limitless horizons in food production. Only imagination sets the limits: frost-resistant wheat, tropical potatoes, saltwater rice, a plant producing a combination of a pea and a carrot-all may be with us one day.

Vaccines for viral diseases are often produced from ______.

A．plant cells

B．human hormones

C．crop plants

D．bacteria

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第11题

—May I ask you why you left the former company？—A、Because I'm very co－operative and

A.Because I'm very co-operative and have good teamwork spirit.

B.Because I want to change my working environment and seek new challenges.

C.Because I have worked for two years with an American Company.

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