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
17
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
TheParthenonTheParthenon,abuildinginAthens,Greece,isperhapsoneofthemostmemorablestructuresonEarth.Built25c
TheEuropeanUnionrevealedonJanuary23rdhowitplanstosavetheworld.Amammothclimate-changeplanspellsoutindetailh
TheEuropeanUnionrevealedonJanuary23rdhowitplanstosavetheworld.Amammothclimate-changeplanspellsoutindetailh
Duringthenormaldevelopmentofself,achildisaffectedbycertaininfluentialfactors.(1)Infantsformanattachmentwitht
AWorldWithoutBooksorMusicIfbookshadneverbeendiscovered,manwouldhavefoundsomeotherwayofrecordinghiscomm
OnesillyquestionIsimplycannottolerateis"Howdoyoufeel?"Usuallythequestionisaskedofamaninaction-amanwalki
Igotanewbatteryformyrecorderonlylastweek,butitseemstohave______already.
56.Whenyouareinthebusinessofsendingspacecrafttootherplanets,itisprobablywisetodoeverythingyoucanmkeepyo
Inrecentyears,manyAmericansofbothsexesandvariousageshavebecomeinterestedinimprovingtheirbodies.Theyhavebecom
A、OflateB、ConsequentlyC、AfterwardsD、AtfirstDoflate意为“最近”;consequently意为“结果”;afterwards意为“之后”;atfirst意为“起初”。文中此处意思是:起初,这(
随机试题
A股四头肌B半腱肌C股二头肌D小腿三头肌E胫骨前肌伸膝关节的肌
结肠癌最早出现的症状是
A.浑浊度B.镉和砷C.游离性余氯D.硫酸盐E.痢疾杆菌属于饮用水感官性状指标的是
A.氢键B.二硫键C.范德华力D.磷酸二酯键E.碱基核苷酸之间的键是
患者,男性,72岁。慢性阻塞性肺气肿病史20多年。今日傍晚进餐时一米粒呛入气管引起剧烈咳嗽,突然呼吸困难,右胸刺痛,逐渐加重。最可能是发生了
资料1资料2若水贸易(香港)有限公司系若水国际贸易(公司)派驻香港的全资子公司,受总公司的委托为宁波若水服装饰品厂对外签约订货。本提单之运输工具于2008年1月16日向宁波海关申报进口。资料3请根据以
甲公司为购买货物而将所持有的汇票背书转让给乙公司,但因担心以此方式付款后对方不交货,因此在背书栏中记载了“乙公司必须按期保质交货,否则不付款”的字样。乙公司在收到票据后没有按期交货。根据票据法律制度的规定,下列表述中,正确的是()。
2013年1~2月,规模以上工业增加值同比实际增长9.9%(以下增加值增速均为扣除价格因素的实际增长率),比2012年12月份回落0.4个百分点。从环比看,2月份,规模以上工业增加值比上月增长0.79%。分经济类型看,1~2月,国有及国有控股企业
简述刑法上的意外事件的特征。
第一台电子计算机是1946年在美国研制的,该机的英文缩写名是
最新回复
(
0
)