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
67
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.
【C13】______
选项
A、descending
B、declining
C、reducing
D、relieving
答案
C
解析
生石灰将有助于减轻湖水的酸性。reducing使减少,为及物动词,符合要求。descending下来,下降,为不及物动词;declining减少,衰落,为不及物动词;relieving缓和,减轻,宾语多为problem。
转载请注明原文地址:https://kaotiyun.com/show/Vu9O777K
0
考博英语
相关试题推荐
Becauseheis______,wecannotpredictwhatcoursehewillfollowatanymoment.
Inoursocietytherazorofnecessitycutsclose.Youmustmakeabucktosurvivetheday.Youmustworktomakeabuck.Thejob
Inoursocietytherazorofnecessitycutsclose.Youmustmakeabucktosurvivetheday.Youmustworktomakeabuck.Thejob
Inoursocietytherazorofnecessitycutsclose.Youmustmakeabucktosurvivetheday.Youmustworktomakeabuck.Thejob
Militaryordersare______andcannotbedisobeyed.
Themagnitudeoftheproblemofdisappearingspecies,viewedworldwide,dwarfsresourcescurrentlyavailabletoaddressit.Byt
Themagnitudeoftheproblemofdisappearingspecies,viewedworldwide,dwarfsresourcescurrentlyavailabletoaddressit.Byt
Indeed,______maydevelopinbehavioroccurringbetweendifferentspecies.
Inordertosurvivenowand______inthefuture,alltheworkingstaffmustconstantlycreatenewideasforeveryaspectofyou
(Despite)thissimilaritywith(other)creatures,theevolutionofhumankinddiffersfrom(otherspecies)in(one)importantand
随机试题
下列各项中,不属于呕吐肝气犯胃证临床表现的是
脑膜炎双球菌脑膜炎选择流感嗜血杆菌脑膜炎选择
下列选项中,属于资产负债表中非流动负债的一项是()。
按结算方式可分为证券给付结算型权证和现金结算型权证。权证如果采用证券给付方式进行结算,其标的证券的所有权发生转移;如采用现金结算方式,则仅按照结算差价进行现金兑付,标的证券所有权不发生转移。()
某企业2019年涉及印花税的业务如下(下列合同金额均为不含增值税金额):签订抵押贷款合同,贷款金额100万元,贷款期限1年,贷款年利率10%;办理抵押的房产价值500万元。
下列情形中属于效力待定合同的有()。
京剧作为我国著名剧种,它和中医、国画并称为中国三大国粹,下列关于京剧的表述正确的是()。
巨大:多少
社会工作是以利他主义价值观为指导,以科学的知识为基础,运用科学方法助人的服务活动。根据上述定义,下列属于社会工作的一项是()。
在正偏态分布中,下列各数值最大的是
最新回复
(
0
)