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 ran leads to fish mortality. Many species of fish cannot survive in aquatic environments there the pH is below 5.0. If the
Acid ran leads to fish mortality. Many species of fish cannot survive in aquatic environments there the pH is below 5.0. If the
admin
2013-01-12
57
问题
Acid ran leads to fish mortality. Many species of fish cannot survive in aquatic environments there 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 【C2】______ becomes extinct. Approximately 20 percent of the lakes in Scandinavia are without fish. Moreover, in Nova Scotia the 【C3】______ salmon industry may be threatened by the decrease of salmon in rivers and streams. The impact is also 【C4】______ in the waters of Ontario and Quebec, where fish populations are 【C5】______ the decline.
What potential remedies exist for the acid rain 【C6】______? The experts disagree. Some say new environmental laws should be 【C7】______ 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 【C8】______ to prevent it. 【C9】______, all agree that if the consumption of fossil fuel were reduced, we would have less of a problem. Another 【C10】______ is that special scrubbers could be installed in smokestacks to remove a good 【C11】______ of the pollutants before they get into the atmosphere. Other ideas even include breeding more 【C12】______ fish. And research suggests that spreading lime into lakes may be effective in 【C13】______ acidity. In conclusion, it is clear that if we truly want to reduce the impact of acid rain, a 【C14】______ of remedies and international cooperation must be explored. It is a sad fact that acid rain probably could have been avoided if we 【C15】______ what we know now.
【C2】______
选项
A、and
B、then
C、hence
D、or
答案
D
解析
句子由状语结构As a result修饰,认定主句描述的是一种结果,而不是一个过程。 or表示两种可能性,符合结果性的描述,为正确答案。
转载请注明原文地址:https://kaotiyun.com/show/Mu9O777K
0
考博英语
相关试题推荐
Becauseheis______,wecannotpredictwhatcoursehewillfollowatanymoment.
Inoursocietytherazorofnecessitycutsclose.Youmustmakeabucktosurvivetheday.Youmustworktomakeabuck.Thejob
Themassacreofinnocentpeoplecannoteverbecondoned.
Themagnitudeoftheproblemofdisappearingspecies,viewedworldwide,dwarfsresourcescurrentlyavailabletoaddressit.Byt
Themagnitudeoftheproblemofdisappearingspecies,viewedworldwide,dwarfsresourcescurrentlyavailabletoaddressit.Byt
(Despite)thissimilaritywith(other)creatures,theevolutionofhumankinddiffersfrom(otherspecies)in(one)importantand
随机试题
王建《水夫谣》中的“水夫”是指()
由并非SAP可推出SOP,其根据是逻辑方阵中的()
当人们认为自己的报酬与劳动之比,与他人的报酬与劳动之比是相等的,这时就会有较大的激励作用,这种理论称为()
肾动脉瘤超声表现叙述不正确的是
最有可能的诊断是若行CT检查可能出现的影像改变是
患者15岁,于3年前开始有发作性意识丧失,全身抽搐,持续5~6分钟恢复,发作当时面色青紫,有时伴尿失禁,舌咬伤,有时夜间睡眠中发作。体检及各项检查均正常。患者叔父有与患者相同的病史,该患者应诊为何病
某承包商于某年承包某外资工程的施工,与业主签订的承包合同约定:工程合同价2000万元;若遇物价变动,工程价款采用调值公式动态结算。该工程的人工费占工程价款的35%,水泥占23%,钢材占12%,石料占8%,砂料占7%,不调值费用占15%;开工前业主向承包商支
在中国举办奥运会,是全世界人民的盛事。我们要________奥运会的宗旨,就是不能把奥运会政治化。其实记者先生已经看出了西藏最近出现这一事件的本质。他们就是想煽动破坏奥运会的事件,来企图达到他们________的目的。依次填入画横线部分最恰当的一项是(
甲、乙、丙三个学生分别戴着三种不同颜色的帽子,穿着三种不同颜色的衣服去参加大运会志愿者服务活动。已知:(1)帽子和衣服的颜色都只有红、黄、白三种;(2)甲没戴红帽子,乙没戴黄帽子;(3)戴红帽子的学生没有穿白衣服;(4)戴黄帽子的学生穿着红衣服;
Playistheprincipalbusinessofchildhood,andmoreandmoreinrecentyearsresearchhasshownthegreatimportanceofplayi
最新回复
(
0
)