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A.additionalB.producingC.regularD.predictedE.identifiedEatmosphereG.matchedH.reducingI.carriedJ.increaseForestsinthenorthernhalfoftheglobecouldbegrowingfasternowthantheywere200
题目详情
A.additional B.producing C.regular D.predicted E.identified E atmosphere G.matched H.reducing I.carried J.increase |
Geoffrey Parker,a scientist at the Smithsonian Environmental Research Centre in Edgewater.Maryland,said that the increase ha the rate of growth was unexpected and might be (42)___ to the higher temperatures and longer growing seasons documented in the region.The growth may also be influenced by the significant (43)___in atmospheric CO2,he said.
"We made a list of reasons these forests could be growing faster and then excluded half of them,"Dr Parker said.Their study suggests that northern forests may become increasingly important in(44)___ the influence of man-made CO2on the climate.
Dr Parker and his colleagues have (45)___out a detailed record of the trees on a(n)(46)___basis since 1987.They calculated that due to the global warming the forest is producing(47)___ tons of wood each year.
The scientists (48)___ the land with trees at different stages of growth and found that both young and old trees were showing increased growth rate.More than 90percent of the tree groups had grown by between two and four times faster than the scientists had(49)___from estimates of the long-term rates of growth.
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答案和解析
答案:41.F 后文有in atmospheric CO2,he said.可以知道是空气中二氧化碳浓度变高.故选F.
42.G 句意表达的是树木的生长率和气温变高,生长季变长呈正比例关系.match匹配,一致.故选G.
43.J 第一段告诉我们大气层中二氧化碳浓度变高,空气中二氧化碳明显增加.increase增加.故选J.
44.H 森林在消除人类制造的二氧化碳对气候的影响中起越来越重要的作用.故选H.
45.I 帕克博士和他的同事们已经开始详细记录树木的生长情况.carry out实施,做.故选I.
46.C 句意表达的记录树木生长是在从1987年的开始的有规律的基础上.故选C.
47.A 全球变暖每年都会带来很多额外的木材.additional额外的,增加的.故选A.
48.E 这项研究的结果可以确定因为气候原因,不论是老的树木还是幼苗,生长率都会变高.identified确定.故选E.
49.D 百分之九十以上的树木生长都比科学家们估计的要快二到四倍.predicted估计.故选D.
42.G 句意表达的是树木的生长率和气温变高,生长季变长呈正比例关系.match匹配,一致.故选G.
43.J 第一段告诉我们大气层中二氧化碳浓度变高,空气中二氧化碳明显增加.increase增加.故选J.
44.H 森林在消除人类制造的二氧化碳对气候的影响中起越来越重要的作用.故选H.
45.I 帕克博士和他的同事们已经开始详细记录树木的生长情况.carry out实施,做.故选I.
46.C 句意表达的记录树木生长是在从1987年的开始的有规律的基础上.故选C.
47.A 全球变暖每年都会带来很多额外的木材.additional额外的,增加的.故选A.
48.E 这项研究的结果可以确定因为气候原因,不论是老的树木还是幼苗,生长率都会变高.identified确定.故选E.
49.D 百分之九十以上的树木生长都比科学家们估计的要快二到四倍.predicted估计.故选D.
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