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
In general terms, the greenhouse effect, which has been studied with wary and keen interest for as long as a century, has to do
In general terms, the greenhouse effect, which has been studied with wary and keen interest for as long as a century, has to do
admin
2013-09-28
32
问题
In general terms, the greenhouse effect, which has been studied with wary and keen interest for as long as a century, has to do with a gradual warming of the earth’s atmosphere. The warming is caused by an increase in the amount of carbon dioxide in the air around us; the CO2 holds heat from the sun instead of letting it be radiated back into space. The more of it in the atmosphere, the more difficult it is for the heat to escape.
CO2 in huge amounts is constantly being released into the atmosphere by the burning of fossil fuels for energy, especially coal. In the last 25 years the concentration of CO2 has risen from about 315 parts per million to 340. Not much, you might say if you are used to dealing with such delicate chemical relationships as the right blend of vermouth and gin. But this is a significant rise, and some conservative experts believe that by the third quarter of the next century, say, 2065, the concentration will have doubled. Others say the doubling will come sooner, in less than 50 years; all agree the CO2 content will keep going up.
The climatic effects of that kind of change are potentially tremendous. Temperatures would rise everywhere. According to the EPA (Environmental Protection Agency) projections, the global average temperature could go up about 3.6’ F by 2040, and as much as 9’ F by the year 2100, giving the New York of that sultry time a climate, in the words of an EPA spokesman, "like Daytona Beach, Florida Farming conditions in some chilly places that now have a very short growing season would be better, and some desert regions would get plentiful rainfall. But many areas now fruitful would be hurt. Our own Midwest would probably suffer more frequent and punishing drought, and land now dependent on irrigation would lose its sources of water. The temperature increases would cause large-scale melting of ice near the poles and a rise in the sea level of about two feet in the 100 years-just for openers-with the tides of the future quite possibly necessitating "a gradual retreat to higher ground. ’ Noah, can you spare a line?
After reading the passage, we may conclude ______.
选项
A、the author is worried about the greenhouse effect
B、the author asks all of us to reduce the use of coal
C、the greenhouse effect is welcome as it is a mixed blessing
D、the greenhouse effect has affected our life now
答案
A
解析
转载请注明原文地址:https://kaotiyun.com/show/IjLK777K
0
专业英语四级
相关试题推荐
ShoppinghabitsintheUnitedStateshavechangedgreatlyinthelastquarterofthe20thcentury.【C1】______inthe1900smostA
ShoppinghabitsintheUnitedStateshavechangedgreatlyinthelastquarterofthe20thcentury.【C1】______inthe1900smostA
ShoppinghabitsintheUnitedStateshavechangedgreatlyinthelastquarterofthe20thcentury.【C1】______inthe1900smostA
ShoppinghabitsintheUnitedStateshavechangedgreatlyinthelastquarterofthe20thcentury.【C1】______inthe1900smostA
ShoppinghabitsintheUnitedStateshavechangedgreatlyinthelastquarterofthe20thcentury.【C1】______inthe1900smostA
Whyisthewomaninterestedintheclass?
Whyisthewomaninterestedintheclass?
Theideaoftravelingthrough______spacetootherplanetsinterestsmanypeopletoday.
ThereisawindowintheofficewhereIworkthatoverlookstheplaygroundnextdoor.Seatedatmydesk,Icanlookoutthiswin
随机试题
下列各项,可见口干但欲漱水不欲咽症状的是
王主任是某护理部主任,她把工作分配给总护士长等管理人员,对于例行性业务按照常规措施和标准执行,她加以必要的监督和指导,只有特殊情况时她来处理。她可集中精力研究及解决全局性管理问题,也调动了下级的工作积极性,这种工作方式遵循的组织原则是()
按照年度施工计划,某工程项目在本年度的安全文明施工费总额为40万元,则发包人应在工程开工后28天内,预付给承包人的安全文明施工费应不低于()万元。
( )是施工项目降低成本的指导文件,是设立目标成本的依据。
国际货物买卖合同是买卖双方根据各自都能接受的国际惯例或法律规定而设定的反映双方在交易磋商中的内容,规定双方的权利和义务的法律文件。一般来讲,一个有效的合同应具备以下几项基本要素()。
物业服务收费的标准发生变化时,物业管理企业应当在执行新标准前()个月公布收费标准。
任务型语言教学途径中,“任务”以意义和语言运用为主要导向。下列选项中,不是“任务”基本特点的是()。
梁先生一个人出去见马歇尔.司徒雷登的时候,总是带着我_______翻译。当时除梁先生外,罗隆基和陈达他们_______民盟国际关系委员会主任和宣传委员会主任的身份同外国人_______的机会更多,但马歇尔.司徒雷登对梁先生更加_______。
袁世凯同五国银行团签订《善后借款合同》,主要是为了()
Besidesactiveforeignenterprisesanda【C1】______numberofprivateemployers,aconsequentialnewdevelopmentwasthedevelopme
最新回复
(
0
)