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
考研
Acid rain leads to fish mortality.Many species of fish cannot survive in aquatic environments where the pH is below 5.0.If the w
Acid rain leads to fish mortality.Many species of fish cannot survive in aquatic environments where the pH is below 5.0.If the w
admin
2015-06-11
27
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.【C1】______, the acid alters the blood chemistry of all fish.As a result, the fish population in an acidic environment decreases or becomes extinct.Approximately 20 percent of the lakes in Scandinavia are without fish.Moreover, in Nova Scotia the【C2】______salmon industry may be threatened by the decrease of salmon in rivers and streams.The impact is also considerable in the waters of Ontario and Quebec, where fish populations are【C3】______the decline.
What potential remedies exist for the acid rain issue? The experts disagree.Some say new environmental laws should be【C4】______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 better to prevent it.【C5】______, all agree that if the consumption of fossil fuel were reduced, we would have less of a problem.Another【C6】______is that special scrubbers could be installed in smokestacks to remove a good【C7】______of the pollutants before they get into the atmosphere.Other ideas even include breeding more tolerant fish.And research suggests that spreading lime into lakes may be effective in【C8】______acidity.In conclusion, it is clear that if we truly want to reduce the impact of acid rain, a【C9】______of remedies and international cooperation must be explored.It is a sad fact that acid rain probably could have been avoided if we【C10】______what we know now.
【C7】
选项
A、piece
B、portion
C、section
D、segment
答案
B
解析
此处指污染物的大部分。B项portion与of连用表示“许多,大部分”,符合文意。其他三项中,a piece of或pieces of表示“一片(块)或许多片(块)”,section与of连用表示“(整体中的)一部分”,segment表示“(整体分离出来的)部分,成分”,都不正确。
转载请注明原文地址:https://kaotiyun.com/show/rLQi777K
0
在职申硕(同等学力)英语
相关试题推荐
AfterAteachinginXiamenUniversity’sMBAcenterforoverfiveyears,IBcometorealizethatCevenifpoliticalandeconomicb
Doesbrainpower______aswegetolder?Scientistsnowhavesomesurprisinganswers.
I______alettertoanInternetservicethatdistributesjournalists’questionstomorethan750institutions.
Thegeneraltopicofthepassageis______.WhichofthefollowingstatementsisNOTTRUEaccordingtothepassage?
TheElNinohas______affectedtheregionalweatherandtemperatureovermuchofthetropics,sub-tropicsandsomemid-latitude
Woman:Youwerelateagainthismorning.Man:Sowhat?Question:Howdoesthemanreacttothewoman’sblame?
Nuclearenergyisanefficientandconvenientsubstituteforconventionalformsofenergywhichwerefoundinspecialgeographic
Afrequentlycitedexampleoftheendangeredspeciesisthepanda.
Manystudentsfindtheexperienceofattendinguniversitylecturestobeaconfusingandfrustratingexperience.Thelecturersp
Lastweek29earnestAmericanhighschoolstudentswereinvitedtoaneveningofreceivinggoodwords,smalltalk,warmtoastsa
随机试题
津液亏虚证的形成原因是
普通干粉灭火剂不能用于扑灭()火灾。
号召德国要摆脱对法国文学的依赖,主张创作“市民悲剧”的是【】
细胞因子的生物学检测方法除外()
如果以划拨方式取得的土地使用权作为抵押物的,下列选项不属于其必须满足的条件的是()。
在进户线安装中,低压架空进户管宜采用(),其管口应装有防水弯头。二次回路接线的要求中,每个接线端子的接线宜为一根,但最多不超过()根。
从上表可以看出,下列年份中,医院诊疗人次最多是()。据上表,下列说法可能正确的是()。
Inthispart,youareaskedtowriteanessayaccordingtotheoutlinegiven.Yourcompositionshouldbeabout200words.Rememb
Throughouthistorymanhaschangedhisphysicalenvironmentinordertoimprovehiswayoflife.Withthetoolsoftechnolog
A、Fruit.B、Water.C、Lunch.D、Repairservices.B
最新回复
(
0
)