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 sci
Half of the world’s coral reefs(珊瑚礁) have died in the last 30 years. Now sci
游客
2024-01-15
42
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(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. [br] Why are coral reefs called "the rainforests of the sea"?
选项
A、Because they are home to a wide variety of sea life.
B、Because they can protect our coasts from storms.
C、Because they might supply natural medicines.
D、Because they look like rainforests.
答案
A
解析
细节题。题干问的是“为什么将珊瑚礁称为‘海洋的热带雨林’?”根据定位句“珊瑚礁被誉为‘海洋的热带雨林’,因为它们为海洋生物提供了天然的保护屏障。”可知珊瑚礁对于海洋的作用主要体现在保护海洋生物的方面。虽然在文中提及了B项,但是,并不能体现珊瑚礁享有“海洋的热带雨林”称号的原因。故选A。
转载请注明原文地址:http://tihaiku.com/zcyy/3365925.html
相关试题推荐
Fewpeoplenowadaysareableto______friendshipintotheirsenioryears.A、postpo
Thenewpowerplantisreported______withinthreeyears.A、havingbeencompleted
Bynextyearhe______inNewYorkforfiveyears.A、hasworkedB、hasbeenworking
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。
Halfoftheworld’scoralreefs(珊瑚礁)havediedinthelast30years.Nowsci
Halfoftheworld’scoralreefs(珊瑚礁)havediedinthelast30years.Nowsci
随机试题
BuildaTeamCreatingtherightteamisimperativetoy
Whyareparentssodesperatetogettheirchildrenfull-scheduled? AsfarasI’
某离心空气压缩机,空气进口温度t=20℃,p1=101300Pa,p2=1550
整个心理现象是在时间上展开的,一般分为哪三个过程()A.心理过程 B.认识
以下选项中属于短纤针织非织造土工布性能要求中的选择项是()。A.撕破强度 B.
网络银行高度依赖信息网络,对于虚拟化、数字化的网络银行来说,必须加强对系统风险和
左边给定的是纸盒的外表面,下面哪一项能由它折叠而成?
根据《政府采购信息公告管理办法》,中标公告应该包括的内容有()。A.评标价格
个体对认知对象的某些品质一旦形成倾向性印象,就会带着这种倾向去评价认知对象的其
下列关于关节痛叙述错误的是A、类风湿性关节炎以双手、腕、肘和足关节的疼痛、肿胀及
最新回复
(
0
)