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
During the nineteenth century, when little was known about environmentalism and conservation, it was common to hear people in Eu
During the nineteenth century, when little was known about environmentalism and conservation, it was common to hear people in Eu
admin
2013-10-30
34
问题
During the nineteenth century, when little was known about environmentalism and conservation, it was common to hear people in Europe and America say that the resources of the sea【B1】______ . They believed the world and nature would continuously reproduce all the resources they would need. For example, a【B2】______ biologist writing in the mid-nineteenth century commented that none of the great sea fisheries were to be【B3】______. Today, though, there is evidence that the resources of the sea are seriously endangered.
【B4】______, environmentalists have focused their attention on the land and air. Recently, however, they are beginning to discover that the resources of the sea are in as much danger. The list of endangered 【B5】______ now included herring and crabs as well as the African elephant, Indian tiger, and the American eagle.
Furthermore, the threats to fish are more【B6】______in some ways than the threats to animals and birds. This is because fish are a much more needed food source, and people【B7】______ depend on fish as an important part of their diet. Hence, a decline in the fish supply could have【B8】______ effects on hunger and population. Fishermen in the North Atlantic alone annually harvest 20 billion pounds of fish to 【B9】______ food demand, but the world needs to recognize that these practices cannot continue without depleting fish reserves within the next few years. Rapidly declining sea resources in many parts of the world are problems that cannot be ignored any longer. Unlike the【B10】______in the nineteenth century, we now know that food supplies in the sea cannot last forever.
【B4】
选项
答案
Previously
解析
此处位于句首,后面接一个逗号,显然应该是修饰句子的副词。本句与后文however引导的内容相对,故本空应填入与recently“最近”相对的表示时间的副词。注意首字母大写。Previously“以前”。
转载请注明原文地址:https://jikaoti.com/ti/VOCFFFFM
0
大学英语四级
相关试题推荐
BigBenisrenownedforitsaccuracyandeven____________.(经受住了10余次袭击)byLuftwaffebombers(德国纳粹空军)duringtheSecondWorldWar
Nowadays,itwasfashionabletospeakofagenerationgap,a【S1】______betweenyoungpeopleandtheirelders.Parentscomplained
Nowadays,itwasfashionabletospeakofagenerationgap,a【S1】______betweenyoungpeopleandtheirelders.Parentscomplained
A、Inthe15thcentury.B、Inthe16thcentury.C、Inthe5thcentury.D、Inthe6thcentury.B
A、Betterland.B、Quickwealth.C、Modemequipment.D、Stricterlaws.B
Thiscountrysuffered______damageduetotheflood.
Peoplehavebeenpaintingpicturesforatleast30,000years.Theearliestpictureswerepaintedbypeoplewhohuntedanimals.T
Thestoryofthe【S1】______Titaniccontinuesto【S2】______peopletodaypartlybecauseofthe1998Hollywoodmovies,Titanic.Peopl
A、Itprovidesspacefordirtyclothes.B、Itiseasytoremove.C、Itcandoubleasabriefcase.D、Itisusuallybigenoughtocar
随机试题
壁胸膜分部()
小儿作PPD试验,皮内注射皮丘直径为
可用于饮水消毒的药物是()
师某几年来共盗窃自行车五百多辆,案发后在横穿公路时突被一辆卡车撞死。司法机关对师某的盗窃行为可能作出的正确决定是()。
唐某打算炒股,苦于资金不够向朋友贾某借了1万元,并将自家的一台笔记本电脑(价值15000元)作为抵押。双方依法签订了借款合同和抵押合同,但没有办理抵押登记。唐某进人股市以后,股市逐渐低迷,唐某损失惨重。还款期限届至后,贾某向唐某索要借款,但唐某已经分文不剩
关于在混凝土中掺入减水剂所起的作用,正确的是( )。
我国会计制度规定,所有的单位记账都采用借贷记账法。()
从所给的四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律性:
以下叙述中正确的是()。
A、Manyofherbooksarebestsellers.B、Sheisashrewdbookstoreowner.C、Sheispromotingherbookinperson.D、Sheisasalesp
最新回复
(
0
)