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更多“Young scientists cannot realiz…”相关的问题
The author states all the following EXCEPT that ______.
A．the development of present technologies can not provide any answers to today's problems
B．an increasing number of young scientists are taking a great interest in biological and social sciences
C．many people as well as scientists have come to understand the limits of natural resources
D．many scientists argue that high technology is something but not everything
In fact, a subtle but significant shift from purely technological solutions is already under way as scientists argue openly for new directions in research.
A growing number of scientists insist that answers to the world's problems will not come from a flashier array of electronics and machines. Instead, as they see it, solutions must evolve from a better understanding of the humans that drive the system and from a fuller appreciation of the limits and potential of the earth's resources.
What this means is an increased emphasis on the life and earth sciences, on sociology, psychology, economics and even philosophy.
More and more of the best minds in science, particularly young researchers, are being drawn into these developing fields.
All this is not to say that technological creativity will not play a critical role in solving energy and food shortages, or that answers to environmental difficulties will not come from further advances in the same technologies that may have helped cause the problems.
Where the real challenge lies, in the view of the new breeds of scientists, is finding ways to produce goods to meet the world's needs, using less of the raw materials that are becoming scarce.
Which of the following best expresses the main idea？
A．A growing number of Americans are doubtful about what high technology can do in solving the world's problems.
B．Many scientists are starting to believe that the better understanding of human beings will play a more decisive role in solving the world's problems.
C．More and more young scientists are trying their best to find new ways to solve the world's problems.
D．Technological creativity will still play a very important part in solving the world's problems.
In fact, a subtle but significant shift from purely technological solutions is already under way as scientists argue openly for new directions in research.
A growing number of scientists insist that answers to the world's problems will not come from a flashier array of electronics and machines. Instead, as they see it, solutions must evolve from a better understanding of the humans that drive the system and from a fuller appreciation of the limits and potential of the earth's resources.
What this means is an increased emphasis on the life and earth sciences, on sociology, psychology, economies and even philosophy.
More and more of the best minds in science, particularly young researchers, are being &awn into these developing fields.
All this is not to say that technological creativity will not play a critical role in solving energy and food shortages, or that answers to environmental difficulties will not come from further advances in the same technologies that may have helped cause the problems.
Where the real challenge lies, in the view of the new breed of scientists, is in finding ways to produce goods to meet the world's needs, using less of the raw materials that are becoming scarce.
Which of the following best expresses the main idea？
A．A growing number of Americans are doubtful about what high technology can do in solving the world's problems.
B．Many scientists are beginning to believe that the better understanding of human beings will play a more decisive role in solving the world's problems.
C．More and more young scientists are trying their best to find new ways to solve the world's problems.
D．Technological creativity will still play a very important part in solving the world's problems.
The writer is mainly talking about ______.
A．a person's living space needs
B．building and floors
C．equipment and conditions
D．population and violence
听力原文： During the 19th century scientists thought that each part of our man's brain does a different job. In the past fifty years there has been a great increase in the amount of research done on the brain. Scientists have discovered that the way the brain works is not so simple as people may think. Chemists tell us that 100,000 chemical changes take place in the brain every second. Some recent researches also suggest that we can remember everything that happens to us. We may not be able to think back the things we've heard and seen, but it is all kept there in the storehouse of the human mind. Earlier scientists thought that power of one's brain got weaker and weaker as one grew older. But it is now thought that that is not true. As long as the brain is given plenty of exercise it keeps its power. It has been proved that an old person who has always been active in the mind has a quicker mind than a young person who has only done physical work without using much of his brain. It is now thought that the more work we give our brains, the more work they are able to do.
What did the 19th century scientists think about our brain？
A．Different part of the brain had different effect.
B．Chemical changes stopped during our sleeping;
C．There was a storehouse in the brain.
Some people think it is the age of the violins. But not all old violins sound wonderful. Only the old violins from Cremona are【26】______.
Other people think that the【27】______to those violins is the wood. The wood of the violin is very important. It must be from certain kinds of trees. It【28】______too young or too old. Perhaps the violin makers of Cremona knew【29】______special about wood for violins.
But the kind of wood may not be【30】______important.【31】______may be more important to cut the wood in a special way. Wood for a violin must be cut very carefully. It was to be the right size and【32】______The smallest difference will change the sound of the violin. Musicians【33】______think that this was the secret of the Italians.【34】______they understood more than we do about how to cut the wood.
Size and shape may not be the answer【35】______.Scientists measured these old violins very carefully. They can make new ones that are exactly the same size and shape. But the violins do not sound【36】______the old ones. Some scientists think the secret may be the varnish. Varnish is what covers the wood of the violin. It makes the wood【37】______shiny. No one knows【38】______the Italian violin makers used in their varnish. So no one can make the same varnish today. There may never be other violins【39】______the violins of Cremona. And there are not very many of the old violins【40】______.
【21】
A．better than
B．worse. than
C．more than
D．rather than
Forty May Be the New 30 As Scientists Redefine Age
Is 40 really the new 30？ In many ways 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 Institute 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.
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.
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.
Forty May Be the New 30 As Scientists Redefine Age
Is 40 really the new 30？ In many ways 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 Institute 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 nderson.
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 o; our skills, our education, our savings and the way we deal 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.
Noise is sure to lead to ______ in the long run according to the article.
A．the loss of listening ability
B．the loss of sight
C．excessive excitement
D．the loss of health
