The end of the article implies that ______.
Americans tend to invest in tangible things to make the others happy
B. Americans don't like vacations
C. most Americans know the importance of memory-making experience
D. the present phenomenon is hard to explain
Growth in industry, agriculture, and transportation since the Industrial Revolution has produced additional quantities of the natural greenhouse gases plus chlorofluorocarbons and other gases, augmenting the thermal blanket. It is generally accepted that this increase in the quantity of greenhouse gases is trapping more heat and increasing global temperatures, making a process that has been beneficial to life potentially disruptive and harmful. During the past century, the atmospheric temperature has risen 1.1°F (0.6℃), and sea level has risen several inches. Some projected, longer-term results of global warming include melting of polar ice, with a resulting rise in sea level and coastal flooding; disruption of drinking water supplies dependent on snow melts; profound changes in agriculture due to climate change; extinction of species as ecological niches disappear; more frequent tropical storms; and an increased incidence of tropical diseases.
Among factors that may be contributing to global warming are the burning of coal and petroleum products (sources of carbon dioxide, methane, nitrous oxide, ozone); deforestation, which increases the amount of carbon dioxide in the atmosphere; methane gas released in animal waste; and increased cattle production, which contributes to deforestation, methane production, and use of fossil fuels.
Much of the debate surrounding global warming has centered on the accuracy of scientific predictions concerning future warming. To predict global climatic trends, climatologists accumulate large historical databases and use them to create computerized models that simulate the earth's climate. The validity of these models has been a subject of controversy. Skeptics say that the climate is too complicated to be accurately modeled, and that there are too many unknowns. Some also question whether the observed climate changes might simply represent normal fluctuations in global temperature. Nonetheless, for some time there has been general agreement that at least part of the observed warming is the result of human activity, and that the problem needs to be addressed.
A UN Conference on Climate Change, held in Kyoto, Japan, in 1997 resulted in an international agreement to fight global warming, which called for reductions in emissions of greenhouse gases by industrialized nations. Not all industrial countries, however, immediately signed or ratified the accord. In 2001 the G. W. Bush administration announced it would abandon the Kyoto Protocol: because the United States produces about one quarter of the world's greenhouse gases, this was regarded as a severe blow to the effort to slow global warming. Despite the American move, most other nations agreed later in the year (in Bonn, Germany, and in Marrakech, Morocco) on the details necessary to convert the agreement into a binding international treaty, which came into force in 2005 after ratification by more than 125 nations.
Which process caused the increased temperature?
A. Global warming.
B. Greenhouse effect.
C. Water evaporation.
D. Light reflection.
What does "spin" in Para. 3 mean?
A swift whirling motion.
B. A state of mental confusion.
C. The distinctive complex of connotations or implications.
D. A distinctive character.
UNITED NATIONS (Reuters) - The United States and Britain want a new U.N. resolution to call for full sovereignty in Iraq (news - web sites) but have not agreed to a firm date for foreign forces to leave the country, diplomats said on Friday.
A council diplomat said the resolution, not yet circulated, was expected to call for a "full transfer of sovereignty" on June 30 to an Iraqi caretaker government, which would then set its own limitations.
Such a government, for example, could not adopt any long-term legislation or agreements, except on a pact to alleviate the country's debt.
Debates have centered at the United Nations (news - web sites) and elsewhere on precisely what sovereignty means in view of a large U.S. military presence and obvious limitations on the government's power. Some ambassadors were concerned that the United Nations would be asked to approve an occupation under another name.
What is not hue according to the passage?
A. UN resolution has not yet been circulated
B. The resolution was expected to call for a "full transfer of sovereignty" on June 30 to an Iraqi caretaker government
C. LIN members agreed on the understanding of sovereignty
D. Some ambassadors were concerned that the United Nations would be asked to approve an occupation under another name.