首页
登录
职称英语
Acid rain leads to fish mortality. Many species of fish cannot survive in aqu
Acid rain leads to fish mortality. Many species of fish cannot survive in aqu
游客
2025-04-21
10
管理
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. [br]
选项
A、know
B、knew
C、had known
D、have known
答案
C
解析
转载请注明原文地址:https://tihaiku.com/zcyy/4047812.html
相关试题推荐
Inthehumanspeciesindividualsareequippedwithfewerinstinctsthanist
Inthehumanspeciesindividualsareequippedwithfewerinstinctsthanist
Inthehumanspeciesindividualsareequippedwithfewerinstinctsthanist
Acidrainleadstofishmortality.Manyspeciesoffishcannotsurviveinaqu
Acidrainleadstofishmortality.Manyspeciesoffishcannotsurviveinaqu
Acidrainleadstofishmortality.Manyspeciesoffishcannotsurviveinaqu
Acidrainleadstofishmortality.Manyspeciesoffishcannotsurviveinaqu
Acidrainleadstofishmortality.Manyspeciesoffishcannotsurviveinaqu
Acidrainleadstofishmortality.Manyspeciesoffishcannotsurviveinaqu
Acidrainleadstofishmortality.Manyspeciesoffishcannotsurviveinaqu
随机试题
StrategiesforWritingaLiteratureReviewAliterature
天津自然资源就自然资源而言,天津在渤海和大港的石油和天然气储量十分丰富。原油年产量可达100
公路供配电设施将国家电网提供的电能(10kV或35kV),转换为公路机电设备使用
不需要使用预防性抗生素的是()。A.甲状腺手术 B.感染病灶手术 C.肠道
某12m跨重级工作制简支焊接实腹工字形吊车梁的截面几何尺寸及截面特性如图所示。吊
洋务运动期间,李鸿章在南京设立的军工企业是( )。A.江南制造局 B.江
除了交易所交易的标准化期权、权证之外,还存在大量场外交易的期权,这些新型的期权通
拓展课常常以{pz_填空}的形式出现。
某期货公司董事会认为王某无法胜任首席风险官的职务而做出免除其职务的决议,王某对此
关于人工挖孔桩,说法错误的是()。A.适用于地下水位以上的黏性土、黄土及人工填土
最新回复
(
0
)