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
41
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
InChinaitisrelativelyusualtoaskpeopletheirage,butintheWestthisquestionisgenerallyregardedasimpolite.Thisi
WhenIwas(at)thegrocerystore,I(realized)thatthepricesof(manyitems)(hadbeenrisen).
Nooneexcepttwostudents______themeeting.
Intheworldinwhichwelivetoday,amanmaybeonethingbutappeartobeanother.ThiswasimpossibleinIndiansociety.An
ProfessorSmithrecentlypersuaded35people,23ofthemwomen,tokeepadiaryofalltheirabsent-mindedactionsforafortnig
Accordingtoasurvey,whichwasbasedontheresponsesofover188,000students,today’straditional-agecollegefreshmenare"
Onetypeofpersonthatiscommoninmanycountriesistheonewhoalwaystriestodoaslittleaspossibleandtogetasmuch(
Onetypeofpersonthatiscommoninmanycountriesistheonewhoalwaystriestodoaslittleaspossibleandtogetasmuch(
Theschoolsthemselvesadmitthatnotallchildrenwillbesuccessfulinthejobs______theyarebeingtrained.
______theuniversecouldneverdiewasoncebelievedbyscientists.
随机试题
反映公司在一定会计期间经营成果的报表是__________。
A、invasionB、decisionC、occasionD、discussionD
关于胁痛的治疗,以下哪项是错误的:
某患者经影像学检查确诊为肾癌,近半个月来出现左侧阴囊内精索静脉曲张,且平卧后不消失,最可能的原因是
甲和乙之间有借贷关系,后二人结婚。此时,甲、乙之间的债权债务可以因下列哪一情形消灭?
甲将自己的汽车藏匿,以汽车被盗为由向保险公司索赔。保险公司认为该案存有疑点,随即报警。在掌握充分证据后,侦查机关安排保险公司向甲“理赔”。甲到保险公司二楼财务室领取20万元赔偿金后,刚走到一楼即被守候的多名侦查人员抓获。关于甲的行为,下列哪一选项是正确的?
关于采矿权、探矿权转让的规定是()。
2007年10月30日,甲公司向同一集团内乙公司发行1000万股普通股(每股面值为1元,市价为3.9元),取得乙公司100%的股权,并于当日起能够对乙公司实施控制。合并后乙公司仍维持其独立法人地位继续经营。两公司在2007年10月30日未考虑该项企业合并时
如果一个人的智商为98,则可以认为他的智力水平属于中等。()
汇率是本国货币与其他货币之间的比价关系,是外汇在市场中的价格。()
最新回复
(
0
)