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
The climate of Earth is changing. Climatologists are confident that over the past century, the global average surface temperatur
The climate of Earth is changing. Climatologists are confident that over the past century, the global average surface temperatur
admin
2013-02-16
60
问题
The climate of Earth is changing. Climatologists are confident that over the past century, the global average surface temperature has increased by about half a degree Celsius. This warming is thought to be at least partly the result of human activities, such as the burning of fossil fuels and the clearing of forests for agriculture. As the global population grows and national economies expand, the global average temperature is expected to continue increasing by an additional 1.0 to 3.5°C by the year 2100.
Climate change is one of the most important environmental issues facing humankind. Understanding the potential impacts of climate change for natural ecosystems is essential if we are going to manage our environment to minimize the negative consequences of climate change and maximize the opportunities that it may offer. Because natural ecosystems are complex, nonlinear systems, it follows that their responses to climate change are likely to be complex. Climate change may affect natural ecosystems in a variety of ways. In the short term, climate change can alter the mix of plant species in land ecosystems such as grasslands. In the long term, climate change has the potential to dramatically alter the geographic distribution of major vegetation types — savannas, forests, and tundra. Climate change can also potentially alter global ecosystem processes, including the cycling of carbon, nitrogen, phosphorus, and sulfur. Moreover, changes in these ecosystem processes can affect and be affected by changes in the plant species of the ecosystem and vegetation type. All of the climate change-induced alterations of natural ecosystems affect the services that these ecosystems provide to humans.
The global average surface temperature increase of half a degree Celsius observed over the past century has been in part due to differential changes in daily maximum and minimum temperatures, resulting in a narrowing of the diurnal temperature range. Decreases in the diurnal temperature range were first identified in the United States, where large-area trends showed that maximum temperatures have remained constant or increased only slightly, whereas minimum temperatures have increased at a faster rate. In this issue, Alward’s report on the different sensitivities of rangeland plants to minimum temperatures increases.
In subsequent paragraphs, we may expect the author of this passage to______.
选项
A、discuss the global impacts of temperatures increases
B、present a point of view which supports the idea of the second paragraph
C、introduce Alward’s report on the different sensitivities of rangeland plants to minimum temperatures increases
D、further illustrate the causes of the global average surface temperature increases
答案
C
解析
本题的四个选项中,只有C项为正确答案。这可从文中最后一段的内容推知,即Alward以及其他作者会在本期就牧场植物对最低温度升高所具有的不同灵敏度作出报告。因此下一段应是与这个报告有关的具体内容。
转载请注明原文地址:https://kaotiyun.com/show/kFmO777K
0
考博英语
相关试题推荐
It’sstrangethatheshouldrefuseajobingovernment_____auniversityappointment.
PsychologistAlfredAdlersuggestedthattheprimarygoalofthepsyche(精神)wassuperiority.Although【1】hebelievedthatindivi
Atthepresenttime,98percentoftheworldenergyconsumptioncomesfromstoredsources,suchasfossilfuelsornuclearfuel.
Thedevelopmentofwritingwasoneofthegreathumaninventions.Itisdifficult【36】manypeopletoimaginelanguagewithoutwr
Overthepastcentury,allkindsofunfairnessanddiscriminationhavebeencondemnedormadeillegal.Butoneinsidiousformco
Auctionsarepublicsalesofgoods,conductedbyanofficiallyapprovedauctioneer.Heasksthecrowdassembledintheauctionr
Atallageandatallstagesoflife,fearpresentsaproblemtoalmosteveryone."Wearelargelytheplaythingsofourfears,"
"ItwasthebeginningofarevolutioninAmericaandtheworld,arevolutionthatsomehaveyettoacknowledgeandmanyhaveyet
Theyearsbetween1870and1895broughtenormouschangestothetheaterintheUnitedStatesastheresidentcompanywasundermi
ThelostcaroftheLeeswasfound______inthewoodsoffthehighway.
随机试题
下列关于基金销售机构的职责规范,说法不正确的是()。
多发性骨髓瘤患者,尿中出现大量本-周蛋白,而血清中无M蛋白,瘤细胞生长迅速,病情进展快,常有骨损害,而出现肾功能不全,此类型属于免疫学分型的
肾小球滤过的葡萄糖被重吸收最多的部位是()。
β受体阻断药对下述何种心律失常疗效最好
下列咳嗽、咳痰护理措施中、错误的是:
下列关于主观概率估计的说法中,错误的是()。
在工程项目策划和决策阶段,项目建议书、可行性研究报告是()的工作成果。
配送中心进行库存管理最直接的目标就是使储存费用和缺货费用之和最小。
TheCommissionisexpectedtoproposeallowingpeopletochoosewhich(36)theywouldcomeunder,basedontheir(37)ortheirr
Readinginvolveslookingatgraphicsymbolsandformulatingmentallythesoundsandideastheyrepresent.Conceptsofreadingha
最新回复
(
0
)