首页
登录
职称英语
Half of the world’ s coral reefs (珊瑚礁) have died in the last 30 years. Now s
Half of the world’ s coral reefs (珊瑚礁) have died in the last 30 years. Now s
游客
2024-01-16
5
管理
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. [br] 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。定位到文章第四段第三句“Then the corals turn white in a process called‘bleaching’.”据此可知,珊瑚礁会在一个被称为“漂白”的过程中,逐渐变成白色,故选D。
转载请注明原文地址:https://tihaiku.com/zcyy/3366716.html
相关试题推荐
Thenewpowerplantisreported______withinthreeyears.A、havingbeencompleted
Thenewpowerplantisreported________withinthreeyears.A、havingbeencomplete
Thecompanyhas______heavyfinanciallossesoverthelasttwoyears.A、enduredB、
Changesinclimate______slowlythroughtheyears.A、makeprogressB、takeplaceC、
Thevalueofthepennyhasbeendroppingforyears.1美分的价值已呈连年下降趋势。
Halfoftheworld’scoralreefs(珊瑚礁)havediedinthelast30years.Nows
Halfoftheworld’scoralreefs(珊瑚礁)havediedinthelast30years.Nows
Halfoftheworld’scoralreefs(珊瑚礁)havediedinthelast30years.Nows
Halfoftheworld’scoralreefs(珊瑚礁)havediedinthelast30years.Nows
Theplanet’shealthdependsonthesurvivalofcoralreefs.珊瑚礁的生存关乎地球是否处于健康状态。
随机试题
ABriefHistoryofOnlineShoppingA)WhenAma
Thereekofthetwintowers’rubblestillpermeatedLowerManhattanwhenYaro
Intheolddays,childrenwerefamiliarwithbirthanddeathaspartoflife
混凝土配料时,砂石骨料的允许偏差为()。A.±1% B.±2% C.+3
下列结论中正确的是( )。
酶法分析优于传统的化学法不包括A.准确性B.精密度C.灵敏度D.线性范围E.抗干
某铁路局积极采取措施,降低运输支出。该局2003年单位货运支出为5分/吨公里,与
下列哪项不属于详细规划阶段的燃气工程规划工作内容?()A.计算燃气管网管径
论述建构主义学习理论对当今基础教育课程改革的影响。
(2018年真题)关于一般性货币政策工具的说法,正确的有()。A.再贴现政策是
最新回复
(
0
)