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The population in the 21st century according to the writer ______.
A．will be smaller than a fw years ago
B．will not be as small as people expect
C．will prove to be a threat to the world
D．will not consitute as serious a problem as expected
答案
更多“The population in the 21st century according to the writer ______.A．will be smaller than a”相关的问题
第1题
听力原文： Man is a land animal,but he is also closely tied to the sea.Throughout history the sea has served the needs of man.The sea has provided man with food and a convenient way to travel to many parts of the world. Toady,experts believe that nearly two-thirds of the world's population live within eighty kilometers of the seacoast.In the modem technological world,the sea offers many resources to help mankind survive.Resources on land are beginning to grow less.The sea,however,still offers hope to supply many of man's needs in the future.The riches of the sea yet to be developed by man's technology are impressive.Oil and gas explorations have existed for nearly thirty years.Valuable amounts of minerals such as iron,copper exist on the ocean floor.Besides oil and gas,the seas may offer new sources of energy.For example,warm temperature of the ocean can be used as the steam in a steamship.Sea may also offer a source of energy as electricity for mankind.Technology is enabling man to explore even deeper under the sea.It is obvious that the technology to harvest the sea continues to improve.By the 2050,experts believe that the problems to explore the food, minerals and energy resources of the sea will have been largely solved.
What do we learn about the sea in the modem technological world？
A．It is the largest supplier of valuable minerals.
B．It will disappear in about thirty years.
C．It is beginning to grow smaller and smaller.
D．It offers many resources to help mankind survive.
第2题
THE BLENDING OF THE UNITED STATES
For years, Jorge Del Pinal's job as assistant chief of the Census Bureau's Population Division was to fit people into neat, distinct racial and ethnic boxes: white, black, Hispanic, Asian or Native American. As the son of an Anglo mother and a Hispanic father, however, he knew all along that the task was not always possible.
For the 2000 decennial census, that will no longer be the case. For the flint time, the census forms will allow people to check off as many races as apply. As a result, the Census Bureau should obtain a better picture of the extent of intermarriage in the United States.
In the absence of such a direct method, a few years ago veteran demographer Barry Edmonston used sophisticated mathematical modeling techniques to calculate how intermarriage is changing the face of the United States as part of an immigration study he directed for the National Research Council of the American Academy of Sciences. His research was summarized in a report entitled The New Americans: Economic, Demographic and Fiscal Effects of Immigration. But as the Canadian-born, white husband of sociologist Sharon Lee, a Chinese-American, Edmonston really needed no computer to understand the transformation under way in this society. He and his family are living, breathing participants.
The face of America is changing-literally. As former President Clinton has said, within 30 or 40 years, when there will be no single race in the majority in the United States, "we had best be ready for it." For his part, Clinton is preparing for that, time by talking about racial tolerance and the virtues of multiculturalism. Others are debating immigration policy, almost all discussion focuses on the potential divisiveness inherent in a nation that is no longer a predominantly white country with a mostly European ancestry.
But afoot behind the scenes is another trend that, if handled carefully, could bring the country closer together rather than drive it apart. This quiet demographic counter-revolution is a dramatic upsurge in intermarriage.
Edmonston's study projected that by 2050, 21 percent of the U.S. population will be of mixed racial or ethnic ancestry, up from an estimate of seven percent today. Among third-generation Hispanic and Asian Americans, exogamy-marriage outside one's ethnic group or tribe-is at least 50 percent, he and others estimate. Exogamy remains much less prevalent among African Americans, but it has increased enormously, from about 1.5 percent in the 1960s to 8 to 10 percent today.
Such a profound demographic shift could take place while no one was watching because, officially, no one was watching. Federal agencies traditionally collected racial data using a formula-one person, one race-similar to the time-honored voting principle. Thus, the Census Bureau could estimate that on census forms no more than two percent of the population would claim to be multiracial. In the absence of a more straightforward count, no one could know for sure what the demographics are.
That's about to change. After the 2000 census, the U.S. Government should have a better idea. In 1997, the Office of Management and Budget, which oversees federal statistical practices, approved a directive allowing people to cheek as many racial boxes as they believe apply to them. The shift was a compromise between the demands of some interest groups that wanted the addition of a "multiracial" box, and those that objected to any change, fearing dilution of their numbers.
Meanwhile, in the absence of official numbers, with the heightened tension surrounding racial issues, and with the mutual suspicion that exists among competing racial and ethnic interest groups, there's little agreement on what intermarriage will mean for U.S. society in the future.
Melting Pot
To see the new face of the Un
A．Y
B．N
C．NG
第3题
What's the main idea of this passage？
A．World population and food shortage.
B．World population and climate change.
C．Desert plants and gene technology.
D．Food and fuel shortage in the future.
第4题
A．The percentage is high.
B．The percentage is low.
C．The amount of the population is not so low.
D．It is not mentioned in the passage.
第5题
The problem that the population becomes aging ______.
A．is exceptional to Germany
B．has become universal
C．can be relieved in Japan with the shrinkage of its population to around 95m
D．makes the economic outlook in the developed countries even more gloomy
第6题
When there are no efficient doctors in large population centers, epidemics start.
A．Y
B．N
C．NG
第7题
A、three fourths of the population
B、one fourth of the population
C、one fifth of the population
D、one half to one third of the population
第8题
According to the author, Arizona should give highest priority to ______.
A．controlling the Latino population
B．enhancing the educational level of the Latino population
C．improving the knowledge-based economy
D．building the Latino population into hardworking and skilled workforce
第10题
A．Y
B．N
C．NG
