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2426ng-tem carbon storage.Research has found that using wood for constructin instead ofdsteel can reduce emissnBut Searchinger says many of these studies are based on the false assumption that harvesting一is carbon neutral（中.“mapere fthdtsnmr木ndfraction of that gets timer product that cam replace coe andbuilding,he says.Efficiencies vary in different our but much ofvestedtreeroand used for short-lived products like papero bumed for eeryall f whichgnrateemissions.Ia report for the World Resources Searching and his colleaues have modeed howusing more wood for construction would affect emissions between 2010 and 2050,accounting for theemissions from harvesting the wood.They considered various types of forests and fractions of woodgoing towards construction.They also factored in the emissions savings from replacing concrete andsteel.In general,they found a large increase in global demand for wood would probably lead torising emissions for deeades.30The researchers report in a related paper that increasing forest harvests between 2010 and 2050would add emissions equal to about 10 percent of total yearly emissions.William Moomaw at TuftsUniversity in Massachusetts says the works show that harvesting timber,even when donesustainably,isn't a carbon neutral activity.Ali Amiri at Aalto University in Finland says the report's conclusions about emissions fromrising demand are probably correct,but the story is different for wood we have already harvested.Boosting the efficiency of current harvests and using more wood for longer-lived purposes than papercut emissions,he sys."We cannot just say we should stopinwood."2.What isacmmbelief about wood usdA.It is cost-efficient.B.It is a zerd-emission material.C.It stores carbon in a long run.D.It functions as an alternative to concrete.What is mos of harvested wood u for?A.Making Fuels.B.Building houses.jucdC.Making furnitureD.Producing fertilizersmotin50.What may Searchinger and Moomaw agree?.工mtntimber sustainably is bon neumanesB.Replacing rete steeave of emshad.C.Less wood consumption makes no difference to emission.herinreing emn forin新疆维吾尔自治区2024年普通高考第二次适应性检测英语试卷第6页共12页
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