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
Half of the world’ s coral reefs (珊瑚礁) have died in the last 30 years. Now scientists are racing to ensure that the rest survive
Half of the world’ s coral reefs (珊瑚礁) have died in the last 30 years. Now scientists are racing to ensure that the rest survive
admin
2019-06-25
25
问题
Half of the world’ s coral reefs (珊瑚礁) have died in the last 30 years. Now scientists are racing to ensure that the rest survive. Even if global warming were to stop right now, scientists predict that more than 90% of corals will die by 2050. If no major steps are taken to address the problem, the reefs may be headed for total extinction.
The planet’s health depends on the survival of coral reefs. They are often described as "the rainforests of the sea" , because they provide shelter for a wide variety of sea life. In addition, the reefs serve as barriers that protect coastlines from the full force of powerful storms.
Corals are used in medical research for cures to diseases. They are key to local economies as well, since the reefs attract tourists, the fishing industry, and other businesses, bringing in billions of dollars.
Corals are particularly sensitive to changes in temperature. A rise of just 1 to 2 degrees can force the corals to drive out the algae (水藻). Then the corals turn white in a process called "bleaching". Corals can recover from short-term bleaching, but long-term bleaching can cause permanent damage. In 1998, when sea surface temperatures were the highest in recorded history, coral reefs around the world suffered the most severe bleaching. It is estimated that even under the best of conditions, many of these coral reefs will need decades to recover.
Although reefs face other threats from pollution, industrial activities, and overfishing, it is global climate change that most concerns scientists. Scientists remain hopeful that it’ s not too late to save the reefs, and some are moving ahead on experiments to accomplish that goal.
Which of the following is the best title for the passage?
选项
A、Rising Global Temperatures.
B、Rainforests are in Danger.
C、Coral Reefs Face Extinction.
D、Global Climate Change.
答案
C
解析
主旨题。根据文章第一段第一句可知,全球有50%的珊瑚礁已经死亡,并且随着气候恶化,珊瑚礁有可能灭绝,本篇文章都是围绕珊瑚礁讲的。C选项“珊瑚礁面临灭绝”最切题,故选C。
转载请注明原文地址:https://jikaoti.com/ti/3CDYFFFM
0
成人本科学位英语
相关试题推荐
Thesebooksaredesignedto______children.
Findingitdifficultto______totheclimateinthecity,hedecidedtomovetothesouth.
Itisherbeautifuleyes______attractmostofthefans.
SpeakerA:So,what’sthestatusofouradvertisingcampaign?SpeakerB:AsImentionedbefore,it’llbeanationalcampaignst
Mancannotgoonincreasinghisnumberatthepresentrate.Inthenext30yearsmanwillfaceaperiodofcrisis.Someexperts
Donald:Let’seatout,shallwe?Debra:【D5】______I’vegonethroughmypaycheckfortheweekalready.Donald:Don’tworryabou
Somegovernmentshaveforbiddencigaretteandalcohol______inpublicplaces.
()yousaidistrue,therearestillotherfactorstobeconsidered.
Woman:Iamhavingtroublewithmyjob.Man:【D1】______Woman:Ihavebeenassignedtoworkwithfiveotherpeopleonaproject,
Interviewee:I’mterriblysorryI’mlate.Ihadratheradifficulttimefindingyouroffice.Interviewer:______
随机试题
一家食品店从周一到周日,每天都有3种商品特价销售。可供特价销售的商品包括3种蔬菜:G、H和J;3种水果:K、L和O;3种饮料:X、Y和Z。必须根据以下条件安排特价商品:(1)每天至少有一种蔬菜特价销售,每天至少有一种水果特价销售。(2)无论在哪天,如果
由于试验方法本身造成的误差叫做偶然误差。
男性患者,68,岁,突起剧烈压榨样胸痛、呕吐伴窒息感2小时入院。查心率110次/分,血压85/60mmHg,心电图示V1~V4导联ST段呈弓背向上抬高,律不齐。
A.队列研究B.病例对照研究C.分析性研究D.描述性研究E.流行病学实验研究一般来说,流行病学研究的起点是
明目地黄丸的主治是()。
在理财规划合同中,有利于清楚的说明签约的原因、条件和目的的条款是()。
出口退税会使现金流量表有一个明显变化,使“经营活动产生的现金流量净额”减少。()
下列关于客户委托资产的表述中,正确的有()。Ⅰ.客户委托资产应当按照中国证监会的规定采取托管方式进行保管Ⅱ.委托资产可以是客户合法持有的现金Ⅲ.委托资产可以是客户合法持有的资产支持证券Ⅳ.委托资产可以是客户合法持有的债券
甲为杀乙将一定时爆炸装置放在乙驾驶的公共汽车驾驶室的座位下。乙出车不久即发生爆炸,除乙被炸死外,车上的三位乘客也受了轻伤。另外,车辆被严重损坏,直接经济损失达10余万元。甲的行为构成( )。
Whereisthewomanfrom?
最新回复
(
0
)