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
Perched among the highlands of western Cameroon, bordered by green mountains and cliff faces, Lake Nvos is a scene of breathtaki
Perched among the highlands of western Cameroon, bordered by green mountains and cliff faces, Lake Nvos is a scene of breathtaki
admin
2014-03-25
43
问题
Perched among the highlands of western Cameroon, bordered by green mountains and cliff faces, Lake Nvos is a scene of breathtaking beauty. But the picture cannot be trusted. A【B1】______study reveals that the lake could release a deadly cloud of carbon dioxide, capable of【B2】______entire communities around its shores.
The warning, from a team of scientists, comes nearly 20 years after the lake discharged an estimated 80m cubic metres of CO
2
into the【B3】______. Heavier than air, the cloud of gas【B4】______surrounding hillsides and villages. Silent and【B5】______, it exhausted the air of oxygen, killing hundreds of cattle and【B6】______the lives of more than 1,700 people up to 26 kilometres away. "It was one of the most mysterious【B7】______scientists have ever investigated," said George Kling, an ecologist at the University of Michigan.
Researchers called in after the 1986 tragedy discovered that the lake contained record levels of carbon dioxide. Gas【B8】______from the Earth’s magma(岩浆)was under such pressure at the bottom of the 200-metre deep lake that it dissolved until it【B9】______ max. A slight shake then released the dissolved gas as a dangerous bubble.
To prevent a recurrence, in 2001 engineers installed a pipe to suck CO
2
from the bottom of the lake and release it【B10】______into the air. A pipe was also installed at Lake Monoun, where an outbreak of CO
2
killed 37 people in 1984. The science team suggests the urgent installation of a further four pipes in each lake at a rate of one a year.
【B10】
选项
答案
harmlessly
解析
harmlessly,意为“无害地”。
转载请注明原文地址:https://kaotiyun.com/show/qKS7777K
0
大学英语四级
相关试题推荐
Oncetheharddecisionshavebeenmadeabouthowtotreatapatient’scancer,doctorsfaceanevenmoredifficultquestion:how
Ifyou’reinchargeofChristmasdinner,withallitsinterconnectedtasksandchallengesoftiming—whentopreheattheoven,wh
Manyparentsmaythinkthateachnewsibling(兄弟姐妹)offerstheirchildrenthegiftofcompanionship.Butwhilewetendtothinkth
A、Hehasbeenonholiday.B、Hehasbeenonbusiness.C、He’sbeentotheGreatLakes.D、Hestayedintheoffice.B女士说有些日子没见到男士了,问
A、Wheretocelebratetheanniversary.B、Thebeststyleofdinner.C、Doingsomethingdifferent.D、Whichrestaurantisbest.A对话开始
IntheU.S.,thereisadifferencebetweenpublicandprivateadoption.Publicadoptiontypicallyinvolvestaking【C1】______foste
Whenyourteachertoldyoutostopdaydreamingandpayattention,shemightactuallyhavehelpedimproveyourmoodaswellasyo
A、Goouttoeatwithherparents.B、Findaplacetoliveneartheharbor.C、Getajobatarestaurant.D、Introducehimtoherpa
A、TowatchTVtogetherwithhim.B、Tosolvetheproblemsforher.C、Toprepareforanexamtogether.D、Togivesomeinstructions
A、She’swaitingforherfather.B、She’shavingherbicyclerepaired.C、She’sbuyingabicycle.D、She’skeepingtheshopforher
随机试题
对单面焊的低合金钢焊接接头做弯曲试验时,其弯曲角度为()。
莱菔子的归经有
A.角膜或角膜缘清创B.羊膜覆盖术C.部分异体角膜缘移植D.全角膜清创联合羊膜移植E.穿透角膜移植角膜缘全周受损,角膜发生弥漫性溶解溃烂,有迅速变薄穿孔趋势,选择的治疗是
绒毛膜癌治愈,观察年限为( )。
测定药物的解离常数方法不包括()
企业规章制度是企业规范性文件,其特点有()。
股票的制作和发行须经()的核准。
已建立劳动关系,未同时订立书面劳动合同的,应当自用工之日起一定期限内订立书面劳动合同,该期限为()。
科举考试中偏重测试考生综合运用知识、分析和解决问题的能力的考试方式是()。(2008年)
WhydoesCarlavoidadoublecheeseburger?
最新回复
(
0
)