名词解释题土壤污染（soil pollution）
名词解释题
土壤污染（soil pollution）
参考解析
解析：
暂无解析
相关考题：
According to the text．which of the following is NOT true?A．Soil forms from weathered rock on the earth surface．B．The deeper layer of soil is darker in colour than t}le surface soil．C．Air pollution is partially responsible for acid soil．D．Groundwater tends to carry away nutrients for plant growth．
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
According to the text. which of the following is NOT true?A. Soil forms from weathered rock on the earth surface.B. The deeper layer of soil is darker in colour than the surface soil.C. Air pollution is partially responsible for acid soil.D. Groundwater tends to carry away nutrients for plant growth.
依据《土壤污染防治法》，应当开展土壤污染状况调查的建设用地有()。A、经土壤污染状况普查、详查表明有土壤污染风险的地块B、经土壤污染监测或现场检查表明有 土壤污染风险的地块C、用途变更为住宅用地的地块D、用途变更为公共服务 用地的地块
单选题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 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 Ambio, 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 authors of the Ambio study have found that（）Aforests get rid of lead pollution faster than expectedBlead accumulations in forests are more difficult to deal withClead deposits are widely distributed in the forests of the USDthe upper layers of soil in forests are easily polluted by lead emissions
单选题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 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 Ambio, 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.How did scientists discover the source of lead pollution in Greenland? （）ABy analyzing the data published in journals like Nature and Ambio.BBy observing the lead accumulations in different parts of the arctic area.CBy studying the chemical elements of soil and snow in Northeastern America.DBy comparing the chemical compositions of leaded gasoline used in various countries.
单选题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 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 Ambio, 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.It can be inferred from the last paragraph that scientists （）Aare puzzled by the mystery of forest pollutionBfeel relieved by the use of unleaded gasolineCstill consider lead pollution a problemDlack sufficient means to combat lead pollution
单选题The latest annex of MARPOL 73/78 is about（）Athe Prevention of Pollution by OilBthe Prevention of Pollution by Noxious Liquid Substances in BulkCPrevention of Pollution by Garbage from ShipsDPrevention of Air Pollution from Ships
单选题The Pollution Prevention Regulations require that all oil spills in United States water be reported immediately to the （）.Alocal port authorityBCorps of EngineersCUSCoast GuardDstate pollution board
单选题What is the passage mainly about?AHow to fight air pollution in big cities.BHow to avoid air pollution in big cities.CHow to breathe fresh air in big cities.DHow serious air pollution is in big cities.
单选题Why does land become desert after all trees are cut down?ABecause nothing remains on land except floods.BBecause there are no longer trees to keep the rain and protect the top-soil.CBecause too much rain sinks in and washes away the top-soil.DBecause roots of the trees break up the soil.
单选题ATo transport water to high places.BTo provide air conditioning.CTo fertilize the soil.DTo adjust the soil temperature.