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The worst pollution threat is concentrated in and near large cities. There the people-made pollutants increasingly surpass the ability of air and water to dilute (冲淡；稀释) the contaminants (污染物) to safe levels. The natural ecological cycle depends on plants, which absorb some pollutants and release oxygen to the air. But near large cities, natural vegetation becomes scarce, and introduced trees, ornamental shrubs and gardens are far from adequate in absorbing motor vehicle and industrial air pollutants. Finally, some pollutants, most notably atomic waste, may continue to contaminate air, land, and water for thousands of years. Therefore, ecocrisis—ecocatastrophe or ecocide—has been for some time one of the major concerns of not only the ecoactivists and environmentalists, but of many scientists of other fields and the government authorities of many countries as well.
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更多 “问答题The worst pollution threat is concentrated in and near large cities. There the people-made pollutants increasingly surpass the ability of air and water to dilute (冲淡；稀释) the contaminants (污染物) to safe levels. The natural ecological cycle depends on plants, which absorb some pollutants and release oxygen to the air. But near large cities, natural vegetation becomes scarce, and introduced trees, ornamental shrubs and gardens are far from adequate in absorbing motor vehicle and industrial air pollutants. Finally, some pollutants, most notably atomic waste, may continue to contaminate air, land, and water for thousands of years. Therefore, ecocrisis—ecocatastrophe or ecocide—has been for some time one of the major concerns of not only the ecoactivists and environmentalists, but of many scientists of other fields and the government authorities of many countries as well.” 相关考题
考题
Some two thousand million years ago, the mountain on the sun was raised probably because______.A. the star moved away from the sunB. another star happened to come near the sunC. fhe sun and the moon raised the tides on the earthD. a large tidal wave of a star travelled over the surface of the sun
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The expression "the cause of the disturbance" in paragraph 2 refers to______.A. the large tidal waveB. the powerful tidal pullC. the star coming near the sunD. one of the sun's planets
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In the writer's view, the more new goods there are,______.A. the less pollution we haveB. the harder pollution can be done away withC. the more pollution there will beD. the more easily pollution can be controlled
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Text 3 Transporting large containers is not as glamorous as making films, but shipping is doing more than Hollywood to boost southern California's economy these days. The nearby ports of Los Angeles and Long Beach, already the two biggest in the country, are growing quickly thanks to trade with China. They are a giant job-creating engine, stimulating industrial and warehouse employment on a scale not seen in the region since the rise of the aerospace industry after the Second World War. Sadly, like most engines, they are filthy.The ports themselves reckon they are responsible for about 12% of all the diesel particle emissions and 45% of the sulphur oxides (硫的 氧化物) in southern California. Carried east by prevailing winds, such pollutants help to create some of America's worst air more than 50 miles inland. Those who live close to the freeways leading out of the ports suffer the most. Researchers have found that children living within a few hundred meters of such roads are not only more likely to suffer from asthma, a disease of the breathing system and characterized by sudden recurring attacks of labored breathing, and coughing. They actually have smaller lungs.The most ambitious effort to control pollution, and the one that may affect the local economy most drastically, involves truckers. Some 16,000 lorries currently haul containers between ships and warehouses, most of whom are owned by Hispanic immigrants. The drivers put in long hours: 13 a day is not unusual, according to a survey. They earn, on average, just under $35,000 a year. Such jobs, like many connected to the port, are an important stepping-stone on the path to the middle class.The ports want to remove the oldest trucks and gradually upgrade the others so that, within five years, the fleet emits four-fifths less pollution than at present. To help pay for this, they intend to levy (征收-) a fee of $34 to $54 on every “dirty” vehicle entering the port. Most important, they want to turn a large, unwieldy network of independent contractors into a more orderly group of companies, as happens in an airport. “We need to have more control,” explains Geraldine Knatz, the head of Los Angeles' port.The reforms do nonetheless pose a threat to the ports' competitiveness. At present, the truckers who work at the docks are price-takers, not price-setters. Because they are self-employed, they are almost impossible to unionize, and consequently have little bargaining power. All that could quite easily change if they were to become the employees of a few large firms. Indeed, the most enthusiastic welcome for the ports' plans has come not from environmental groups but from the Teamsters' union.第31题：What is the passage mainly about?［A］The consequences of shipping industry in southern California.［B］The causes of pollution along the coast of southern California.［C］The pollution problem of the shipping industry in southern California.［D］The role of shipping industry in southern California's economy.
考题
In 2002 Mercedes was the worst－performing large luxury car maker, while in 2005 it became the best of its kind.()
此题为判断题(对，错)。
考题
On a weather map, a large letter “H” means ______.A.a high pressure area with cool, dry air, and fair weatherB.a high pressure area with warm, moist air, and inclement weatherC.horse latitudes, with rough seas and strong windsD.a heavy squall line near the “H”
考题
A small amount of spoofed packets are being sent across a network and a large amount of reply packets are being sent back to the network resource. Which of the following BEST describes this security threat?（）A.WormB.SmurfC.Logic BombD.Man-in-the-middle
考题
At his parents’ urging, he enrolled in Columbia University, so that, if worst came to worst, he could always go to the School of Journalism and “get a nice steady job somewhere”.
考题
We only had ＄100 and that was _______ to buy a new computer.A．nowhere near enoughB．near enough nowhereC．enough near nowhereD．near nowhere enough
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A vessel would be referred to as "stiff" when the weight of the cargo is ______.A.evenly distributed vertically and the double bottoms are fullB.concentrated low and the double bottoms are emptyC.concentrated low and the double bottoms are fullD.concentrated high and the double bottoms are empty
考题
Norwegian farmers and fishermen have an important influence because ______.A. they form such a large part of the Norwegian ideal
B. their lives and values represent the Norwegian ideal
C. their work is so useful to the rest of Norwegian society
D. they regard oil as a threat to the Norwegian way of life
考题
All-in-one UTM security gateways are starting to displace routers in many small business networks. What does UTM stand for？（）A、 United Threat MonitorB、 Universal Threat ManagerC、 Unified Threat ManagementD、 Ultimate Threat Monitoring
考题
We expect ____ large orders from Europe in the near future.A、receiveB、to receiveC、to receivingD、being received
考题
A small amount of spoofed packets are being sent across a network and a large amount of reply packets are being sent back to the network resource. Which of the following BEST describes this security threat?（）A、WormB、SmurfC、Logic BombD、Man-in-the-middle
考题
单选题In Excerpt 3, the writer argues that pollution_____.A
has increase since the eightiesB
is at its worst in industrialized countriesC
results from poor relation between nationsD
is caused by human self-interest
考题
单选题We expect ____ large orders from Europe in the near future.A
receiveB
to receiveC
to receivingD
being received
考题
单选题On a weather map,a large letter “h” means（）A
a high pressure area with cool, dry air and fair weatherB
a high pressure area with warm, moist air and inclement weatherC
horse latitudes, with rough seas and strong windsD
a heavy squall line near the “H”
考题
问答题Pollution and Ecocrisis The problem of pollution is also of great social concern. Continued population increase, accompanied by a rise in the level of living standards, not only threatens to exhaust American resources but pollutes the environment to such an extent that production in the thickly settled area is impossible without damaging the health of the local residents. Smog, once an urban annoyance, is now recognized as a health risk, and the automobile has been pinpointed as the principal culprit. Heavy industries have been blamed for river, soil, air, noise and visual pollutions. DDT and other chemical remedies have been doing more ecological harm than the good that they may have brought along. Several decades ago, Americans dumped raw sewage into rivers and many industrial plants are now still dumping chemical pollutants into lakes, rivers and oceans. Oceans used to be and are still being considered to be a reserve of seafood. Today, after the oceans have become the home of all pollutants, this use of the oceans is being reduced at an alarming rate. The worst pollution threat is concentrated in and near large cities. There the people-made pollutants increasingly surpass the ability of air and water to dilute (冲淡；稀释) the contaminants (污染物) to safe levels. The natural ecological cycle depends on plants, which absorb some pollutants and release oxygen to the air. But near large cities, natural vegetation becomes scarce, and introduced trees, ornamental shrubs and gardens are far from adequate in absorbing motor vehicle and industrial air pollutants. Finally, some pollutants, most notably atomic waste, may continue to contaminate air, land, and water for thousands of years. Therefore, ecocrisis—ecocatastrophe or ecocide—has been for some time one of the major concerns of not only the ecoactivists and environmentalists, but of many scientists of other fields and the government authorities of many countries as well. Last but not least, there is the question of whether the people will eventually be able to solve all these problems. The American continent is a wealthy land inhabited by many able and well- educated people. There today, people have originated a life-style which is known to the world as being characteristic of a society of consumption—a life-style based on the prodigal (挥霍浪费的) use of material goods. They are using up many times their share of the earth’s resources at a rate unparalleled in history. And I am sorry to say that this life-style of American has been copied by the people of many developed countries, leading to the greatest problem of the modem world as a whole. So I must ask: Are the Americans apt enough to cooperate with other peoples to prevent over-population, resource exhaustion, the catastrophe of pollution and the wanton waste of wealth — problems which are basic to the solution of many outstanding economic, social and political problems? Only time will tell.
考题
单选题The latest annex of MARPOL 73/78 is about（）A
the Prevention of Pollution by OilB
the Prevention of Pollution by Noxious Liquid Substances in BulkC
Prevention of Pollution by Garbage from ShipsD
Prevention of Air Pollution from Ships
考题
单选题All-in-one UTM security gateways are starting to displace routers in many small business networks. What does UTM stand for？（）A
United Threat MonitorB
Universal Threat ManagerC
Unified Threat ManagementD
Ultimate Threat Monitoring
考题
问答题The worst pollution threat is concentrated in and near large cities. There the people-made pollutants increasingly surpass the ability of air and water to dilute (冲淡；稀释) the contaminants (污染物) to safe levels. The natural ecological cycle depends on plants, which absorb some pollutants and release oxygen to the air. But near large cities, natural vegetation becomes scarce, and introduced trees, ornamental shrubs and gardens are far from adequate in absorbing motor vehicle and industrial air pollutants. Finally, some pollutants, most notably atomic waste, may continue to contaminate air, land, and water for thousands of years. Therefore, ecocrisis—ecocatastrophe or ecocide—has been for some time one of the major concerns of not only the ecoactivists and environmentalists, but of many scientists of other fields and the government authorities of many countries as well.
考题
单选题In most developed countries, the small corporation pays about 32.5 percent of its net income in taxes ______ the large one pays ______ 46 percent.A
but; near B
and; onlyC
while; someD
however; quite
考题
问答题Practice 4 The problem of pollution is also of great social concern. Continued population increase, accompanied by a rise in the level of living standards, not only threatens to exhaust American resources but pollutes the environment to such an extent that production in the thickly settled area is impossible without damaging the health of the local residents. Smog, once an urban annoyance, is now recognized as a health risk, and the automobile has been pinpointed as the principal culprit. Heavy industries have been blamed for river, soil, air, noise and visual pollutions. DDT and other chemical remedies have been doing more ecological harm than the good that they may have brought along. Several decades ago, Americans dumped raw sewage into rivers and many industrial plants are now still dumping chemical pollutants into lakes, rivers and oceans. Oceans used to be and are still being considered to be a reserve of seafood. Today, after the oceans have become the home of all pollutants, this use of the oceans is being reduced at an alarming rate. The worst pollution threat is concentrated in and near large cities. There the people-made pollutants increasingly surpass the ability of air and water to dilute (冲淡；稀释) the contaminants (污染物) to safe levels. The natural ecological cycle depends on plants, which absorb some pollutants and release oxygen to the air. But near large cities, natural vegetation becomes scarce, and introduced trees, ornamental shrubs and gardens are far from adequate in absorbing motor vehicle and industrial air pollutants. Finally, some pollutants, most notably atomic waste, may continue to contaminate air, land, and water for thousands of years. Therefore, ecocrisis—ecocatastrophe or ecocide—has been for some time one of the major concerns of not only the ecoactivists and environmentalists, but of many scientists of other fields and the government authorities of many countries as well.
考题
单选题A large metallic device，mounted directly in the piping (usually located at the dock near the point where the vapor hose is attached)，designed to prevent the passage of a rapidly moving flame through the piping is called a（）.A
flame arrestorB
flame screenC
detonation arrestorD
detonation blocker
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