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
Acid rain leads to fish mortality. Many species of fish cannot survive in aquatic environments where the pH is below 5.0. If the
Acid rain leads to fish mortality. Many species of fish cannot survive in aquatic environments where the pH is below 5.0. If the
admin
2013-01-28
55
问题
Acid rain leads to fish mortality. Many species of fish cannot survive in aquatic environments where the pH is below 5.0. If the water is too acid, the gill systems of many kinds of fish can be damaged.【21】, the acid alters the blood chemistry of all fish. As a result, the fish population in an acidic environment decreases【22】becomes extinct.
Approximately 20 percent of the lakes in Scandinavia are without fish. Moreover, in Nova Scotia the【23】salmon industry may be threatened by the decrease of salmon in rivers and streams. The impact is also【24】in the waters of Ontario and Quebec, where fish populations are【25】the decline.
What potential remedies exist for the acid rain【26】? The experts disagree. Some say new environmental laws should be【27】to control the emission of pollutants in the atmosphere. Some say that if we had known how serious acid rain was, we would have planned【28】to prevent it.【29】, all agree that if the consumption of fossil fuel were reduced, we would have less of a problem. Another【30】is that special scrubbers could be installed in smokestacks to remove a good【31】of the pollutants before they get into the atmosphere. Other ideas even include breeding more【32】fish. And research suggests that spreading lime into lakes may be effective in【33】acidity. In conclusion, it is clear that if we truly want to reduce the impact of acid rain, a【34】of remedies and international cooperation must be explored. It is a sad fact that acid rain probably could have been avoided if we【35】what we know now.
选项
A、descending
B、declining
C、reducing
D、relieving
答案
C
解析
转载请注明原文地址:https://kaotiyun.com/show/H31O777K
0
考博英语
相关试题推荐
Isupportyourdecision,butIshouldalsomakeitclearthatIamnotgoingtobe________toit
I’vetoldyou_____thatyoucannotgooutandplayuntilyou’vefinishedyourhomework.
Hisofficeis________tothePresident’s;itusuallytakeshimaboutthreeminutestogetthere.
TheAleuts(阿留申人)werenamedsobyRussians,buttheycallthemselvesUnanganwhichmeans"thepeople."Theyarenativeinhabit
Superstitionisadifficultquestion.WecannotquitesaythatsuperstitioninBritainisdead.Itshistoryisboth【76】longand
Afterthirtyyearsoftelevision,peoplehavebecome"speedwatchers".Consequently,ifthecameralingers,theinterestofthe
PriscillaOuchida’s"energy-efficient"houseturnedouttobeahorribledream.Whensheandherengineerhusbandmarriedafew
Theworld’spopulationcontinuestogrow.Therenowareabout4billionofusonearth.Thatcouldreach6billionbytheendof
WhatMakesa"MillennialMind"?(1)Since1000AD,around30billionpeoplehavebeenbornonourplanet.Thevastmajorityh
随机试题
A.反复回忆过去的事情B.反复思索无意义的问题C.脑中总是出现一些对立的思想D.反复出现不属于自己的思维强制涌入脑内E.总是怀疑自己的行动是否正确属于强制性思维的是
会阴侧切时,将切伤以下哪些肌肉
女孩,4岁,高热1天,腹泻6~7次/日,为黏液脓血便,腹痛伴里急后重,反复惊厥,逐渐出现昏睡、意识不清,病前吃过未洗的黄瓜,诊断为细菌性痢疾,其临床类型属于
当完成市场分件和其他前期研究工作并进行了项目评估之后,就要进入实施过程,而实施过程的第一步就是()。
图所示结构,截面A、B的受拉侧分别为( )。
某工程项目,建设单位通过公开招标方式确定某施工单位为中标人,双方签订了工程承包合同,合同工期3个月。合同中有关工程价款及其支付的条款如下:(1)分项工程清单中含有两个分项工程,工程量分别为甲项4500m3,乙项31000m3,清单报价中,甲
下面是某教师讲授“当今世界经济全球化趋势”一课的教学片段:师:什么是经济全球化趋势?生1:随着国际性经济交往的日益增多,特别是第二次世界大战后,在高新科技的推动下,世界经济迅速发展,各国、各地区之间的联系越来越密切。从总体上看,世界经济正在逐渐形成一个
某学生遇到难题时,会仔细思考,甚至连喜爱的动画片也不去看,表明该生具备()这种品质。
有些家长对学龄前的孩子束手无策,他们自愿参加了当地的一个为期六周的“家长培训”计划。家长们在参加该项计划前后,要在一份劣行调查表上为孩子评分,以表明孩子到底给他们带来了多少麻烦。家长们报告说,在参加该计划之后他们遇到的麻烦确实比参加之前要少。以下
在Linux中,DNS服务器的配置文件是__________。(2012年上半年试题)
最新回复
(
0
)