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Evidence of past climatic changes indicates that______.
A．human activities have accelerated changes of Earth's environment
B．Earth's environment will remain mild despite human interference
C．Earth's climate is bound to change significantly in the future
D．Earth's climate is unlikely to undergo substantial changes in the future
答案
更多“Evidence of past climatic changes indicates that______.A．human activities have accelerated”相关的问题
第1题
A．are well protected
B．have land-based evidence
C．are in isolation
D．have a longer history
第2题
What serves as the evidence that man is changing？
A．Man has got stronger eyes now than he ever had.
B．Man's hair is getting thinner and thinner.
C．Man's arms and legs have become lighter and weaker.
D．Man has been growing taller over the past 500 years.
第3题
Many Americans still _____1 whether honesty was an important part of the American Character.______2 that reason,there are ______3 watch-dog committees at all levels of society.Although signs of dishonesty in school,business,and government seem much more numerous in recent years than in the past,could it be that we are getting better at revealing such dishonesty？ Some evidence is ______4 that dishonesty may ebb and flow.When times are hard,incidents of theft and cheating usually go ______ 5.And when times get better such incidents tend to go down.
第4题
The next rapid jump in population started perhaps 10,000 years ago, when men began to keep herds, plow and plant the earth. Once again when initial productivity gains had been absorbed, the rate of population growth abated.
These two episodes suggest that the third great change, the present rapid growth, which began in the West between 250 and 350 years ago, may also slow down when, or if technology begins to yield fewer innovations. Of course, the current knowledge revolution may continue without foreseeable end. Either way contrary to popular belief in constant geometric growth-population can be expected in the long run to adjust to productivity. And when one takes this view, population growth is seen to represent economic progress and human triumph rather than social failure.
Which of the following is net true according to the passage？
A．Human population expands at an exponential rate.
B．Population growth has shown fluctuation in demographic history.
C．Population growth can not be regarded as a social failure.
D．Increase in population is related to productivity.
第5题
Sheet music or printed music, too, is material culture. Scholars once defined folk music cultures as those in which people learn and sing music by ear rather than from print, but research shows mutual influence among oral and written sources during the past few centuries in Europe, Britain, and America. Printed versions limit variety because they tend to standardize any song, yet they stimulate people to create new and different songs. Besides, the ability to read music notation has a far-reaching effect on music and, when it becomes widespread, on the music culture as a whole.
One more important part of music's material culture should be singled out. the influence of the electronic media--radio, record player, tape recorder, television, and videocassette, with the future promising talking and singing computers and other developments. This is all part of the "information revolution", a twentieth-century phenomenon as important as the industrial revolution was in the nineteenth. These electronic media are not just limited to modem nations; they have affected music cultures all over the globe.
Research into the material culture of a nation is of great importance because ______.
A．it helps produce new cultural tools and technology
B．it can reflect the development of the nation
C．it helps understand the nation's past and present
D．it earl demonstrate the nation's civilization
第6题
Modern African politicians publicly speak out against tribal divisions. Yet it remains perhaps the most powerful force in day-to-day African life. As evidence of tribalism, in 1977 in Kenya, president Jomo Kenyatta's tribe controlled business and politics. Eight of the 21 cabinet posts, including the most important four were filled by Kikuyus. In Uganda in the same year, the president's small Kakwa tribe filled almost all the highest government and military positions! In Agola, Ethiopia, and Nigeria, the fighting in the past ten years can be partly explained by disagreements among tribes.
What is the definition of tribalism？
A．Sharing among members of the extended family.
B．Giving a job to a fellow tribesman.
C．A force that can be both good and bad.
D．People have the same religious belief.
第7题
How Global Warming Works
Gases in the Earth's atmosphere act like glass in a greenhouse-trapping heat and making life on Earth possible. But there is a delicate balance. Burning coal, oil and natural gas increases atmospheric concentrations of these gases. Over the past century, increases in industry, transportation, and electricity production have increased gas concentrations in the atmosphere faster than natural processes can remove them leading to human-caused warming of the globe.
The Sources Of Global Warming
The major source of global warming is carbon dioxide pollution from power plants, auto mobiles, and industry. Another source is global deforestation.
Power plants are responsible for more than a third of U. S. CO2emissions, yet there are no caps on CO2emissions from power plants or any other industry.
Gas guzzling cars and light trucks are also responsible for a third of U.S. CO2emissions. Current regulations allow for very inefficient vehicles which spew tons of CO2
Trees remove carbon dioxide from the air as they grow. When they are cut and burned that CO2is released back into the atmosphere. Massive deforestation around the globe is releasing large amounts of CO2and decreasing the forests' ability to take CO2from the atmosphere.
Solutions
The U. S. , with only four percent of the world's population, is responsible for 22 percent of the world's greenhouse gas emissions. Fortunately, solutions exist to cut our global warming emissions. Decision makers in the United States should take the following steps.
Increasing fuel efficiency standards for cars and light trucks would cut millions of tons of CO2pollution as well as decreasing dependence on foreign oil.
Putting a cap on CO2from power plants would cut millions of tons of CO2pollution as well as decreasing pollution that causes acid rain, smog, and respiratory illness.
Shifting investment from fossil fuels like coal and oil to renewable energy and energy efficiency would allow cleaner, more sustainable sources of energy to take their rightful place as market leaders.
Ratification of the Kyoto Protocol would be a modest but important first step to ward international emissions reductions.
The Evidence
Recently, alarming events that are consistent with scientific predictions about the effects of climate change have become more and more commonplace. The global average temperature has increased by about 0.5°C and sea level has risen by about 10 inches (25cm) in the past century. Official confirmation came in 1995, when the Intergovernmental Panel on Climate Change, an officially appointed international panel of over 2,500 of the world's leading scientific experts, found that evidence suggests a human influence on the global climate.
The following are events which consistent with scientists predictions of the effects of global warming:
The past two decades have witnessed a stream of new heat and precipitation re cords. The 10 hottest years on record have all occurred since 1980, the hottest year ever on record is 1997, and the hottest January through July on record occurred in 1998. Glaciers are melting around the world. Alaska's Columbia Glacier has retreated more than eight miles in the last 16 years while temperatures there have increased. A section of an Antarctic ice shelf as big as the District of Columbia broke off.
Severe floods like the devastating Midwestern floods of 1993 and 1997 are becoming more common.
Infectious diseases are moving into new areas as seen in the recent outbreaks of Dengue fever in Texas and Malaria in New Jersey.
The Opposition
The Global Climate Coalition, a powerful coalition of oil, power, and auto companies has followed the lead of tobacco companies by denying the harm they ca
A．Y
B．N
C．NG
第8题
- often under pressure. City people appear always to be hurrying to get where they are going restlessly, seeking attention in a store, and elbowing others as they try to complete their errands (任务). Racing through daytime meals is part of the pace of life in this country. Working time is considered precious. Others in public eating places are waiting for you to finish so that they too can be served and get back to work within the time allowed. Each person hurries to make room for the next person. If you don.t, waiters will hurry you. You also find drivers will be abrupt and that people will push past you. You will miss smiles, brief conversations, and small courtesies with strangers. Don.t take it personally. This is because people value time highly, and they resent someone else "wasting"it beyond a certain courtesy point. The view of time affects the importance we attach to patience. In the American system of values, patience is not a high priority. Many of us have what might be called "a short fuse." We begin to move restlessly about if we feel time is slipping away without some return - be this in terms of pleasure, work value, or rest. Those coming from lands where time is looked upon differently may find this matter of pace to be one of their most difficult adjustments in both business and daily life. Many newcomers to the States will miss the opening courtesy of a business call, for example, they will miss the ritual socializing that goes with a welcoming cup of tea or coffee that may be traditional in their own country. They may miss leisurely business chats in a café or coffeehouse. Normally, Americans do not assess their visitors in such relaxed surroundings over prolonged small talks. We seek out evidence of past performance rather than evaluate a business colleague through social courtesies. Since we generally assess and probe professionally rather than socially, we start talking business very quickly.
1.Which of the following statements is wrong？ ___________
A.Americans seem to be always under pressure
B.Americans attach less importance to patience
C.Americans don.t care much about ritual socializing
D.Americans are impolite to their business colleagues
2.In the fourth paragraph, "a high priority"means ___________.
A.a less important thing
B.a first concern
C.a good business
D.an attractive gift
3.Americans evaluate a business colleague ________.
A.through social courtesy
B.through prolonged business talks
C.by establishing business relations
D.by learning about their past performance
4.This passage mainly talks about __________.
A.how Americans treasure their time
B. how busy Americans are every day
C.how Americans do business with foreigners
D. what American way of life is like
5.We can infer from the passage that the author.s tone in writing is ________.
A.critical
B.ironical
C.praiseful
D.objective
第9题
How Global Warming Works
Gases in the Earth's atmosphere act like glass in a greenhouse—trapping heat and making life on Earth possible. But there is a delicate balance. Burning coal, oil and natural gas increases atmospheric concentrations of these gases. Over the past century, increases in industry, transportation, and electricity production have increased gas concentrations in the atmosphere faster than natural processes can remove them leading to human-caused warming of the globe.
The Sources Of Global Warming
The major source of global warming is carbon dioxide pollution from power plants, automobiles, and industry. Another source is global deforestation.
Power plants are responsible for more than a third of U.S. CO2 emissions, yet there are no caps on CO2 emissions from power plants or any other industry.
Gas guzzling cars and light trucks are also responsible for a third of U.S. CO2 emissions. Current regulations allow for very inefficient vehicles which spew tons of CO2.
Trees remove carbon dioxide from the air as they grow. When they are cut and burned CO2 is released back into the atmosphere. Massive deforestation around the globe is releasing large amounts of CO2 and decreasing the forests' ability to take CO2 from the atmosphere.
Solutions
The U.S., with only four percent of the world's population, is responsible for 22 percent of the world's greenhouse gas emissions. Fortunately, solutions exist to cut our global warming emissions. Decision makers in the United States should take the following steps.
Increasing fuel efficiency standards for cars and light trucks would cut millions of tons of CO2 pollution as well as decreasing dependence on foreign oil.
Putting a cap on CO2 from power plants would cut millions of tons of CO2 pollution as well as decreasing pollution that causes acid rain, smog, and respiratory illness.
Shifting investment from fossil fuels like coal and oil to renewable energy and energy efficiency would allow cleaner, more sustainable sources of energy to take their rightful place as market leaders.
Ratification of the Kyoto Protocol would be a modest but important first step toward international emissions reductions.
The Evidence
Recently, alarming events that are consistent with scientific predictions about the effects of climate change have become more and more commonplace. The global average temperature has increased by about 0.5℃ and sea level has risen by about 10 inches(25 cm) in the past century. Official confirmation came in 1995, when the Intergovernmental Panel on Climate Change, an officially appointed international panel of over 2,500 of the world's leading scientific experts, found that evidence suggests a human influence on the global climate.
The following are events which consistent with scientists' predictions of the effects of global warming:
The past two decades have witnessed a stream of new heat and precipitation records. The 10 hottest years on record have all occurred since 1980, the hottest year ever on record is 1997, and the hottest January through July on record occurred in 1998.
Glaciers are melting around the world. Alaska's Columbia Glacier has retreated more than eight miles in the last 16 years while temperatures there have increased. A section of an Antarctic ice shelf as big as the District of Columbia broke off.
Severe floods like the devastating Midwestern floods of 1993 and 1997 are becoming more common.
Infectious diseases are moving into new areas as seen in the recent outbreaks of Dengue fever in Texas and Malaria in New Jersey.
The Opposition
The Global Climate Coalition, a powerful coalition of oil, power, and auto companies has followed the lead of tobacco companies by denyi
A．Y
B．N
C．NG
