首页
登录
职称英语
Perched among the highlands of western Cameroon, bordered by green mountains
Perched among the highlands of western Cameroon, bordered by green mountains
游客
2023-07-23
25
管理
问题
Perched among the highlands of western Cameroon, bordered by green mountains and cliff faces, Lake Nyos is a scene of breathtaking beauty. But the picture cannot be【B1】______.A detailed study reveals that the lake could release a【B2】______cloud of car bon dioxide, capable of wiping out entire communities around its shores.
The warning, from a team of scientists, comes nearly 20 years after the lake【B3】______an estimated 80m cubic metres of CO2 into the atmosphere. Heavier than air, the cloud of gas rolled down,【B4】______hillsides and villages. Silent and invisible, it【B5】______the air of oxygen, killing hundreds of cattle and claiming the lives of more than 1,700 people up to 26km away. "It was one of the most mysterious【B6】______scientists have ever investigated" said George Kling, an ecologist at the University of Michigan.
Researchers called in after the 1986【B7】______discovered that the lake, which sits atop a volcano, contained record levels of carbon dioxide. Gas bubbling up from the Earth’s magma was under such【B8】______at the bottom of the 200-metres deep lake that it dissolved until it reached max.【B9】______.
To prevent a recurrence, in 2001 engineers installed a pipe to suck CO2 from the bottom of the lake and release it harmlessly into the air.【B10】______. Dr Kling’s team recommends the urgent installation of a further four pipes in each lake at a rate of one a year.【B11】______. [br] 【B5】
选项
答案
exhausted
解析
此题考查听特定信息的能力。解题的关键在于抓住上句所用的时态为一般过去时,由于此句还是在描述湖水释放二氧化碳的情景,所以要用过去时。
转载请注明原文地址:https://tihaiku.com/zcyy/2860893.html
相关试题推荐
[originaltext][32]NewEnglandisanareaofmountains,valleys,andrivers
[originaltext][32]NewEnglandisanareaofmountains,valleys,andrivers
[originaltext][32]NewEnglandisanareaofmountains,valleys,andrivers
PerchedamongthehighlandsofwesternCameroon,borderedbygreenmountains
PerchedamongthehighlandsofwesternCameroon,borderedbygreenmountains
PerchedamongthehighlandsofwesternCameroon,borderedbygreenmountains
PerchedamongthehighlandsofwesternCameroon,borderedbygreenmountains
[originaltext]CamerooninWestAfricaisanationof24separatelanguages
[originaltext]CamerooninWestAfricaisanationof24separatelanguages
[originaltext][32]NewEnglandisanareaofmountains,valleys,andrivers
随机试题
I’vedecidedtotaketheplungeandstartupmyownbusiness.Theunderlinedwor
[originaltext]Inamodernsociety,nocompanycanhopetomakeaprofiton
[originaltext]Aboutahundredyearsago,thepeopleofLondonwereamazedt
Videorecordersandphotocopiers,eventicketmachinesontherailways,ofte
TherePicturesfromouterspacenowshow
根据儿童少年的生理特征,在进行体育锻炼时已采用()。A.大负荷力量训练 B
老年性骨质疏松症主要与老龄化有关,多见于70岁以上的老年人,男女比例约为2:1。
如果一国发生了较为严重的通货膨胀,则()。A.该国货币升值 B.该国货币的购买
某法院决定开庭审理张某贪污案,被告人张某在开庭前突发心脏病死亡。该法院应当如何处
某珠宝生产企业本期外购珠宝取得增值税专用发票上注明价款100000元,该珠
最新回复
(
0
)