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
2018-08-14
45
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(灭绝).
(78)
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.
Coral 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.
(79)
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.
The corals turn______in the process of "bleaching".
选项
A、red
B、black
C、green
D、white
答案
D
解析
细节题。题干问的是“在‘漂白’过程中,珊瑚礁会变成什么颜色?”根据定位句“接着,珊瑚礁会在一个被称为‘漂白’的过程中,逐渐变成白色。”可知,珊瑚礁会在这一过程中变成白色。故选D。
转载请注明原文地址:https://kaotiyun.com/show/n7CO777K
0
成人本科学位英语
相关试题推荐
—Yourbook,Tommy?—No,Morn,it’smyfriend’s.—Remembertoreturnitto______nameisonit.
Accordingtothepassage,Indiannameswereimportantbecausethey______.______gavethesecondnameofanIndian.
HenryFord,thefamousU.S.inventorandcarmanufacturer,oncesaid,"ThebusinessofAmericaisbusiness."Bythishemeantt
Friendisbetterthanfortune.Friendisworsethanpoisoninsome【C1】______.Theabovetwostatementsareoppositeandseemto
Idon’tliketodisturbyou,becauseyou’requitetired______today.
Aspricesandbuildingcostskeeprising,the"do-it-yourself"(DIY)trend(趋势)intheU.S.continuestogrow."Weneededfu
Hisparentswouldn’tlethimmarryanyone______familywaspoor.
Forthispart,youareallowed30minutestowriteacompositiononthetopicALetterofApplication.Youshouldwriteatleast
Imagineyou’reatapartyfullofstrangers.You’renervous.Whoarethesepeople?Howdoyoustartaconversation?Fortunately,
随机试题
拘留后的羁押期限比逮捕后的羁押期限短。
采矿业防水防渗工程常用()。
在影响计算机安全的因素中,员工操作失误属于内部人员道德风险。 ( )
与自制及外购决策无关的成本项目是()。
课程实施
学生掌握了整数、分数、小数的知识后,可以概括为有理数,这是思维过程的()。
下列有关我国公民权利的表述符合宪法规定的是()。
第一印象形成中最重要的维度是()【西南大学2014】
为了选择多个控件,可以按住【】键,然后单击每个控件。
A、Heisnotfollowingthecompleterecipe.B、Heismissingtherightpantocookthepizza.C、Heisusingthedirectionsforad
最新回复
(
0
)