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
35
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、announced
B、ordered
C、imposed
D、enacted
答案
D
解析
转载请注明原文地址:https://kaotiyun.com/show/x31O777K
0
考博英语
相关试题推荐
OnesillyquestionIsimplycannottolerateis"Howdoyoufeel?"Usuallythequestionisaskedofamaninaction-amanwalkin
Isupportyourdecision,butIshouldalsomakeitclearthatIamnotgoingtobe_____toit.
Duringthenormaldevelopmentofself,achildisaffectedbycertaininfluentialfactors.(1)Infantsformanattachmentwitht
Theworldisfacingthe______ofwatershortagescausedbypopulationgrowth,unevensuppliesofwater,pollution,andotherfac
Superstitionisadifficultquestion.WecannotquitesaythatsuperstitioninBritainisdead.Itshistoryisboth【76】longand
PriscillaOuchida’s"energy-efficient"houseturnedouttobeahorribledream.Whensheandherengineerhusbandmarriedafew
A、expectingB、hopingC、wishingD、dreamingB本题考核的知识点是动词。四个词都有“希望“的意思,但其程度及用法不同。A项表示“希望,期待”,后面不用加介词;B项表示“希望”;C项表示“很难达到的希望”;D项表示“梦想
Withhumanfootprintsonthemoon,radiotelescopeslisteningformessagesfromaliencreatures(whomayormaynotexist).techn
Someweeksago,ridinginacabfromBostontoCambridge,mydriverturnedandaskedmewhatIdidforaliving."TeachEnglish,
Onewayofimprovingone’swritingistogetintothehabitofkeepingarecordofyourobservations,ofstoring【71】inanoteboo
随机试题
防火涂料按使用目标来分,可分为()、隧道防火涂料、船用防火涂料等多种类型。
()用MF500型万用表测量交流电压时,先将右侧的转换开关旋到“V”上,左侧的转换开关旋到标有“V”相应的量程符号处,并将开关置于适当量程挡,然后将红色表笔插入万用表上标有“+”号的插孔内,黑色表笔插入标有“*”号的插孔内。
男性,30岁,不慎被车撞伤右腰部,神清,右腰疼痛,尿色红。上述病例最有价值的检查是
三羧酸循环是()代谢联系的枢纽。
土地开发程度设定既是地价定义的重要方面,也是确定价格的基本依据。下列估价项目中,可以将土地开发程度设定为宗地红线内外五通一平的是()。
晴朗的天气,适宜的旅游温度是()。
设计任务:请阅读下面学生信息和语言素材,设计20分钟的英语听力教学方案。该方案没有固定格式,但须包含下列要点:-teachingobjectives-teachingcontents-keyanddifficultpoints-
A.条件(1)充分,但条件(2)不充分。B.条件(2)充分,但条件(1)不充分。C.条件(1)和(2)单独都不充分,但条件(1)和条件(2)联合起来充分。D.条件(1)充分,条件(2)也充分。E.条件(1)和(2)单独都不充分,条件(1)和条件(2
使用VC6打开考生文件夹下的源程序文件modi3.cpp,其中定义了用于表示学生学号的类CStudentlD,但类CStudentID的定义并不完整。运行结果为:学生的学号为:200805学生名为:李伟删除学生学号为:200805
A、Itslevelwasnotbigenough.B、Itscenterwasdeepbelowthesurface.C、Itstruckruralmountainousareas.D、Theconstruction
最新回复
(
0
)