题目内容
（请给出正确答案）
A．The new study confirmed earlier findings.
B．The new study is important, but needs to be confirmed.
C．The new study is important, and welcomed by educators.
D．Children who watch ranch TV at the age of 7 have attention problems.
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更多“A．The new study confirmed earl…”相关的问题
A．The speaker is going to travel in the new place.
B．The speaker is going to settle down in the new place.
C．The speaker will become a teacher in the new place.
D．The speaker will go on with her study in the new place.
Which of the following is implied but not stated in the passage？
A．The study of language is the same as the study of anthropology.
B．The study of language has reinforced anthropologists in their view that there are no hierarchy among cultures.
C．The study of language discredited the anthropological studies.
D．The study of language casts a new light upon the claims of anthropologists.
The new trend in artificial intelligence research stems from ______.
A．the shift of the focus of study on the recognition of the shapes of objects
B．the belief that human intelligence cannot be duplicated with logical, step-to-step programs
C．the aspirations of scientists to duplicate the intelligence of a ten-month-old child
D．the efforts made by scientists in the study of the similarities between transistor and brain cells
The new trend in artificial intelligence research stems from ______.
A．the shift of the focus of study on to the recognition of the shapes of objects
B．the belief that human intelligence cannot be duplicated with logical, step-by-step programs
C．the aspirations of scientists to duplicate the intelligence of a ten-month-old child
D．the efforts made by scientists in the study of the similarities between transistors and brain ceils
Which of the following is implied but nut stated in the passage？
A．The study of language is the same as the study of anthropology.
B．The study of language has reinforced anthropologists in their view that there are no hierarchy among cultures.
C．The study of language discredited the anthropological studies.
D．The study of language casts a new light upon the claims of anthropologists.
Some plan to use the findings to support calls for closing the nuclear reactors at Indian Point(A nuclear power station is U. S. A. ), the plant closest to New York City. But federal officials, some radiation experts and representatives of the nuclear plants and that minute, occasional releases from such plants were much lower than natural radiation levels,
The new statistical study, which is being published in Archives of Environmental Health, was conducted by a group of scientists who for many years have intended to show a link between mortality and illness and low levels of radiation from power plants, bomb tests and other sources.
The study said the infant death rate in communities for two years before the plant shutdowns averaged 8.44 deaths per l, 000 births and, when all the mortality data for two years after the plant shutdowns were combined, the infant mortality rate dropped to 7.01 per l, 000 births. The difference was statistically significant, the authors said, and the drop was greater than the general drop in infant death rates around the country in recent years.
Joseph Mangano, a public health statistician and the national coordinator for the group, said a statistical link does not prove a cause and effect, but points to the need for more work. He said," The list is literally endless. This doesn't mean we've proved anything beyond a shadow of a doubt, but what I will say is we really need to do more follow-up."
The new study was conducted by______.
A．the government
B．radiation experts
C．antinuclear campaigners
D．public health statisticians
Passage Three Questions 21 to 25 are based on the following passage.
Lead deposits, which accumulated in soil and snow during the 1960's and 70's, were primarily the result of leaded gasoline emissions originating in the United States. In the twenty years that the Clean Air Act has mandated unleaded gas use in the United States, the lead accumulation world-wide has decreased significantly.
A study published recently in the journal Nature shows that air-borne leaded gas emissions
from the United States were the leading contributor to the high concentration of lead in the snow in Greenland. The new study is a result of the continued research led by Dr. Charles Boutron, an expert on the impact of heavy metals on the environment at the National Center for Scientific Research in France. A study by Dr. Boutron published in 1991 showed that lead levels in arctic(北极的 ) snow were declining.
In his new study, Dr. Boutron found the ratios of the different forms of lead in the leaded gasoline used in the United States were different from the ratios of European, Asian and Canadian gasolines and thus enabled scientists to differentiate (分区) the lead sources. The dominant lead
ratio found in Greenland snow matched that found in gasoline from the United States.
In a study published in the journal Ambio, scientists found that lead levels in soil in the North-eastern United States had decreased markedly since the introduction of unleaded gasoline.Many scientists had believed that the lead would stay in soil and snow for a longer period.
The authors of the Ambio study examined samples of the upper layers of soil taken from thesame sites of 30 forest floors in New England, New York and Pennsylvania in 1980 and in 1990.
The forest environment processed and redistributed the lead faster than the scientists had expected.
Scientists say both studies demonstrate that certain parts of the ecosystem (生态系统 ) re-spond rapidly to reductions in atmospheric pollution, but that these findings should not be used as a license to pollute.
21. The study published in the journal Nature indicates that
A．the Clean Air Act has not produced the desired results
B．lead deposits in arctic snow are on the increase
C．lead will stay in soil and snow longer than expected
D．the US is the major source of lead pollution in arctic snow
根据下面材料，回答题。
Lead Pollution (铅污染)
Lead deposits, which accumulated in soil and snow during the 1960&39;s and 70&39;s, were primarily the result of leaded gasoline emissions originating in the United States. In the twenty years that the Clean Air Act has mandated unleaded gas use in the United States, the lead accumulation worldwide has decreased significantly.
A study published recently in the journal Nature shows that air-borne leaded gas emissions from the United States were the leading contributor to the high concentration of lead in the snow in Greenland. The new study is a result of the continued research led by Dr. Charles Boutron, an expert on the impact of heavy metals on the environment at the National Center for Scientific Research in France. A study by Dr. Boutron published in 1991 showed that lead levels in arctic (北极的) snow were declining.
In his new study, Dr. Boutron found the ratios of the different forms of lead in the leaded gasoline used in the United States were different from the ratios of European, Asian and Canadian gasolines and thus enabled scientists to differentiate (区分) the lead sources. The dominant lead ratio found in Greenland snow matched that found in gasoline from the United States.
In a study published in the journal/Imbio (人类环境杂志), scientists found that lead levels in soil in the Northeastern United States had decreased markedly since the introduction of unleaded gasoline.
Many scientists had believed that the lead would stay in soil and snow for a longer period. The authors of the Ambio study examined samples of the upper layers of soil taken from the same sites of 30 forest floors in New England, New York and Pennsylvania in 1980 and in 1990. The forest environment processed and redistributed the lead faster than the scientists had expected.
Scientists say both studies demonstrate that certain parts of the ecosystem (生态系统).respond rapidly to reductions in atmospheric pollution, but that these findings should not be used as a license to pollute.
The study published in the journal Nature indicates that__________. 查看材料
A.the US is the major source of lead pollution in arctic snow
B.the Clean Air Act has not produced the desired results
C.lead will stay in soil and snow longer than expected
D.lead deposits in arctic snow are on the increase
A group of sleep research organizations asked the Institute of Medicine to study the problem. The institute is part of America's National Academy of Sciences. The study examined why we need sleep, the effects of sleep loss and other sleep dimmers. A fourteen-member committee carried out the study. The Institute of Medicine reported their findings earlier this month. The report says American businesses lose more than 100,000 million dollars a year because of tired workers. Some employees are too tired to report for work. They have accidents or are less productive at work. Other costs included increased visits to doctors.
Many experts say a good amount of sleep is as important to health as diet end exercise. They say most people need 7 to 9 hours of sleep each night. Less than that can interfere with mental and physical abilities. It can lead to more serious problems, including severe sleeplessness.
Researchers involved in the study axe suggesting a number of steps to help prevent sleep disorders. They suggest a campaign to inform. the public about the problem. They want increased education and training among health care workers. And they are calling for new technology to identify and care sleep problems.
Which of the following problems was not mentioned in the study？
(30)
A．The reason that people need sleep.
B．The results of sleep loss.
C．The effects of oversleeping.
D．Different kinds of sleep disorders.
The findings are shown in the latest worldwide cost of living study conducted yearly by the Economist Intelligence Unit, a business research organization based in London. The information is meant to help big firms set payments for people working away from their home country. As in last year's study, two Japanese cities, Tokyo and Osaka, were found to be the most expensive places to live. The report also says that cities in the euro zone (欧元区) , have become more expensive relative to other places since the introduction of euro notes and coins. For example, Paris now has the tenth highest costs; it was in fourteenth place a few years ago. Berlin has gone from fiftieth to thirty-first place. Those findings will strengthen the opinion that businesses have exploited disorder over the new currency to push up their prices. But as in past years, the highest costs in Europe are outside the euro zone. London, for example, is the seventh most expensive city in the world to live in. New York, which has the highest prices in America, is in 11th place. The biggest fall in relative costs has taken place in Buenos Aires. That partly shows the fall of the Argentine currency, following the country's inability to pay the money it owes. The cheapest major cities were found to be Tehran in Iran and Harare, capital of Zimbabwe.
What is the text mainly about？
A．The economic development in Europe.
B．The results of a study.
C．Living costs outside the euro zone.
D．Changes in world currencies.
