首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
(111) The climatic phenomenon that is being blamed for floods hurricanes and early snowstorms also deserves credit for encouragi
(111) The climatic phenomenon that is being blamed for floods hurricanes and early snowstorms also deserves credit for encouragi
admin
2012-10-23
19
问题
(111)
The climatic phenomenon that is being blamed for floods hurricanes and early snowstorms also deserves credit for encouraging plant growth and helping to control the pollutant linked to global warming, a new study shows.
El Nino—the periodic warming of eastern Pacific Ocean waters—causes a burst of plant growth throughout the world, and this removes carbon dioxide from the atmosphere, researchers have found.
(112)
The new study shows that natural weather events such as the brief warming caused by El Nino, have a much more dramatic effect than previously believed on how much carbon dioxide is absorbed by plants and how much of the gas is expelled by the soil.
Atmospheric carbon dioxide, or CO
2
, has been increasing steadily for decades. This is thought to be caused by an expanded use of fossil fuels and by toppling of tropical forests. Scientists have linked the CO
2
rise to global warming, a phenomenon known as the greenhouse effect. (113)
Alarmed nations of the world now are drawing up new conservation policies to reduce fossil fuel burning, in hopes of reducing greenhouse gases in the atmosphere.
But David Schimel of the National Center for Atmospheric Research, a co-author of the new study, says that before determining how much to reduce fossil fuel burning we should consider the effects of natural climate variations on the ability of plants to absorb CO
2
.
Schimel said satellite measurements of CO
2
, plant growth and temperature show that natural warming events such as El Nifio at first cause more CO
2
to be released into the atmosphere, probably as the result of accelerated decay of dead plant matter in the soil. But later, within two years, there is an explosion of growth-in forests and grasslands, which means plants suck more carbon dioxide out of the atmosphere.
"We think that there is a delayed response in vegetation and soil to the warming effects of such phenomena as El Nifio, and this leads to increased plant growth," said Schimel.
(114)
However, be said, it is not clear whether the warming by El Nino causes a net decrease in the buildup of CO
2
over the long haul.
"We don’t really know that yet," said Schimel. What the study does show, however, is that the rise and fall of CO
2
in the atmosphere is strongly influenced by natural changes in global temperature, said B. H. Braswell of the University of New Hampshire, another co-author of the study.
Braswell said that in years when the global weather is cooler than normal, there is a decrease in both the decay of dead plants and in new plant growth. This causes an effect that is the opposite of El Nino warming: CO
2
atmosphere levels first decline and later increase.
(115)
"I think we have demonstrated that the ecosystem has a lot more to do with climate change than was previously believed,
" said Braswell, "Focusing on the role of human activity in climate change is important, but man made factors are not the only factors."
选项
答案
我认为我们已经证明了这一点,即生态系统与气候变化之间的关系比我们以前认为的要密切得多。
解析
句子的框架是I think we have demonstrated that...。I think后面紧跟了宾语从句we have demonstrated that...,而宾语从句中又包含了that引导的宾语从句作have demonstrated的宾语,这个宾语从句中又有more... than...结构,than引导了比较状语从句,其中,词组have... to do with的意思是“和…有关系”。
转载请注明原文地址:https://jikaoti.com/ti/2KHYFFFM
0
考博英语
相关试题推荐
Somereadersmayfindit______thatabookarguingforgreaterliteracyandintellectualdisciplineshouldleadtoacallforl
Thelittlegirlisjustlearningtowalkandshe’salways______over.
ForthepeoplewhohavenevertraveledacrosstheAtlanticthevoyageisafantasy.Butforthepeoplewhocrossitfrequentlyo
ForthepeoplewhohavenevertraveledacrosstheAtlanticthevoyageisafantasy.Butforthepeoplewhocrossitfrequentlyo
ForthepeoplewhohavenevertraveledacrosstheAtlanticthevoyageisafantasy.Butforthepeoplewhocrossitfrequentlyo
Thisproblemshouldbediscussedfirst,forittakes______overalltheotherissues.
Battlesarelikemarriages.Theyhaveacertainfundamentalexperiencetheyshareincommon;theydifferinfinitely,butstillt
Battlesarelikemarriages.Theyhaveacertainfundamentalexperiencetheyshareincommon;theydifferinfinitely,butstillt
(66)GNPbecomesanobsoletemeasureofprogressinasocietystrivingtomeetpeople’sneedsasefficientaspossibleandwitht
随机试题
未来计算机的发展趋势不包括()
某处理器具有32GB的寻址能力,则该处理器的地址线有______。
不稳定型心绞痛的治疗包括
A.肝B.心C.脾D.肺E.肾仓廪之官指的是()
有助于判断中骨盆狭窄的重要指标是
(2011年)运用公式“y=a+bx”编制弹性预算,字母x所代表的业务量可能有()。
利润表中各项目的“本年累计数”反映的是()。
依次填入画横线部分最恰当的一项是()。①伊拉克军官一向美军使用自杀性爆炸行动,萨达姆_________就追授这位军官两枚勋章。②这几年他_________住在北京,没有到别的城市去过。
《北京折叠》
A、 B、 C、 C原句是说Judy住在对面大楼的八层。图片[A]画的是第六层楼,图片[B]画的是第七层,图片[C]是第八层,所以,应该选[C]。
最新回复
(
0
)