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
What can be said about the report by the National Academy of Sciences?
What can be said about the report by the National Academy of Sciences?
admin
2016-07-10
71
问题
What can be said about the report by the National Academy of Sciences?
W: Mr. Welch, do you think there is any doubt now that global warming exists?
M: Let me put it this way. A few determined skeptics don’t accept it, but the over-whelming majority of scientists do. The report the National Academy of Sciences issued was very balanced. They noticed some uncertainties , for example, when and where impacts might be felt and to what degree. But the conclusion was that the earth is warming. This change is induced by human activity and it will get worse.
W: Do a few degrees of warming really matter?
M: The earth is warmed by 1 degree Fahrenheit in the last 100 years, more in some places, like the Arctic, where there has been an increase of 4 to 5 degrees since the 1950s. Polar bears are having a terrible time there and may be extinct by the end of this century. Already, we are seeing changes in Alaska, where roads are buckling in places and some major pipelines no longer fit together. Cold water fish that used to be found off the Alaskan Coast are no longer there.
W: Can a new energy policy help?
M: Energy policy is climate policy since fossil fuels are the main sources of green-house gases, so the question becomes: Where do we get our energy? In the United States, 51% of electricity comes from coal, 20% nuclear, 16.5% natural gas, 7% hydroelectric, 3% oil and the rest, renewables, geothermal, wind, and solar.
W: How much power can we realistically expect to derive from renewable sources?
M: 10% by 2020 is realistic or with a considered effort, 30% by 2050. Without major breakthroughs, it’s hard to get beyond a third, because most renewables are intermittent. You need better ways of storing the energy.
选项
A、Nuclear energy.
B、Coal.
C、Oil.
D、Natural gas.
答案
B
解析
转载请注明原文地址:https://kaotiyun.com/show/lOXd777K
本试题收录于:
公共英语五级笔试题库公共英语(PETS)分类
0
公共英语五级笔试
公共英语(PETS)
相关试题推荐
______wasopenedtothepublicasearlyas1978?______isthefirstimperialtombtohavebeenexcavatedinChina?
Accordingtosomedoctorsandpoliticians,theamountofsaltconsumed______.Inthethirdparagraph,Dr.Laraghimpliesthat__
Whereispopulationgrowthhappening?
Outwardlyyoumaybeonfriendlytermswiththepeoplenextdoor,but,ifthetruth(31)known,youwouldnotthinkmuchofthem
Outwardlyyoumaybeonfriendlytermswiththepeoplenextdoor,but,ifthetruth(31)known,youwouldnotthinkmuchofthem
PaulStraussmann,retiredvicepresidentofXerox,indicatesinhisbookinformationPayoffthat"almosthalfoftheU.S.inform
Whichofthefollowingbestexpressestheauthor’smainpoint?Accordingtothepassage,present-dayphilosophersbelievethat
InwhatwaydidDr.CohenhelpexplainwhysomanyAmericansdieofdrugreactions?Whatkindofadversereactionsmaythedose
Perhaps(31)arefarmorewivesthatIimaginewhotakeitfor(32)thathouseworkisneithersatisfyingnorevenimportantonce
AnotherearlyNativeAmericantribein(31)isnowthesouthwesternpartoftheUnitedStateswastheAnasazi.ByA.D.800theA
随机试题
_______是一个进程是否存在的标志。
与胃癌的发生无关的因素是
从作用力角度分析,下列几种渠道中能够产生均匀流的是()。
期货公司申请金融期货全面结算业务资格,应当具备申请日前3个会计年度中,至少2年,盈利且每季度末客户权益总额平均不低于人民币()元,控股股东期末净资本不低于人民币10亿元。
对于一个要求具有近期工作经验的职位来说,较好的招聘来源是()。
材料:生态文明建设呼吁富于时代精神的消费观念。近代以来,西方社会有人推崇消费主义,强调可推动经济增长,鼓励人们无节制消费,把消费和占有更多物质财富作为人生成功的标志。消费主义导致了资源的浪费和环境的恶化。中国传统社会崇尚勤俭节约,提倡节省实用,主张节制
看见小坦克,就要玩开坦克;听见蛙鸣,就要学青蛙跳;拿到雪花积木片,就会想到冬天的漫天风雪;如果没有玩具,幼儿可能呆呆地坐着。这反映了幼儿()。
地球上只有温带才有明显的四季变化,而寒带和热带则是长冬无夏和长夏无冬。其原因是:
Itiscommonknowledgethathealthyfoodssuchasfruitsandvegetablescontaincertainnutrientsthatpromotegoodhealth—namel
A、 B、 C、 C
最新回复
(
0
)