首页
登录
职称英语
With the world’ s population estimated to grow from six to nine billion by 20
With the world’ s population estimated to grow from six to nine billion by 20
游客
2024-01-26
14
管理
问题
With the world’ s population estimated to grow from six to nine billion by 2050, researchers, businesses and governments are already dealing with the impact this increase will have on everything from food and water to infrastructure (基础设施) and jobs. Underlying all this 【C1】______ will be the demand for energy, which is expected to double over the next 40 years.
Finding the resources to meet this demand in a 【C2】______, sustainable way is the cornerstone (基石) of our nation’ s energy security, and will be one of the major【C3】______of the 21st century. Alternative forms of energy—bio-fuels, wind and solar, to name a few— are 【C4】______ being funded and developed, and will play a growing【C5】______in the world’ s energy supply. But experts say that, even when【C6】______, alternative energy sources will likely meet only about 30% of the world’ s energy needs by 2050.
For example, even with【C7】______investments, such as the $93 million for wind energy development 【C8】______ in the American Recovery and Reinvestment Act, important alternative energy sources such as wind and bio-fuels 【C9】______ only about 1% of the market today.
Energy and sustainability experts say the answer to our future energy needs will likely come from a lot of【C10】______—both traditional and alternative.
A) stable B) solutions C) significant D) role
E) progress F) marvelous G) included H) growth
I) exactly J) consist K) comprise L) competitions
M) combined N) challenges O) certainly [br] 【C4】
选项
答案
O
解析
本句话不缺少成分,意义也完整,且在实义动词之前,可推测这里应该是副词,certainly更符合题意。
转载请注明原文地址:https://tihaiku.com/zcyy/3394789.html
相关试题推荐
OnChina’sNetizenPopulationForthispart,youareallowed30minutestou
[originaltext]Astheworldpopulationrises,thedemandformeat,eggsand
ItisreportedthatcourierservicesinChinawilldeliverabout12billionp
It’shotnowinAfghanistan,where35%ofthepopulationisunder-fed.Buts
It’shotnowinAfghanistan,where35%ofthepopulationisunder-fed.Buts
It’shotnowinAfghanistan,where35%ofthepopulationisunder-fed.Buts
ThenumberofspeakersofEnglishinShakespeare’stimeisestimatedtohave
ThenumberofspeakersofEnglishinShakespeare’stimeisestimatedtohave
ThenumberofspeakersofEnglishinShakespeare’stimeisestimatedtohave
ThenumberofspeakersofEnglishinShakespeare’stimeisestimatedtohave
随机试题
[originaltext]M:Ireallydon’tknowwhattodotiffssummer.Ican’taffordto
【B1】[br]【B8】A、coordinationB、accordanceC、touchD、graspCtokeepthestaffand
InthehousewhereIgrewup,itwasourcustomtoleavethe"onthelatch"
相关系数的( )大小体现两个证券收益率之间相关性的强弱。A.概率 B.标准差
杵状指(趾)可见于下列疾病,除了A.发绀型先天性心脏病 B.支气管扩张 C.
采用差额内部收益率法进行投资方案比选时,是将差额内部收益率(△IRR)与基准收益
张某、李某、刘某共同出资设立的甲普通合伙企业(下称甲企业),经全体合伙人一致同意
运算放大器应用电路如图所示,在运算放大器线性工作区,输出电压与输入电压之间的运算
关于地下防水工程中卷材防水施工的说法,正确的有( )。A.卷材防水层应铺贴在混凝
用人单位有下列情形()之一的,可能被依法追究刑事责任。A.违法解除或终止劳动合同
最新回复
(
0
)