首页
登录
职称英语
During the nineteenth century, when little was known about environmentalism
During the nineteenth century, when little was known about environmentalism
游客
2023-07-08
40
管理
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. [br] 【B1】
选项
答案
were unlimited
解析
根据空格前的hear people...say that...,可知此处需填入that宾语从句的谓语动词,时态上应与主句it was common一致,同为过去时。unlimited“无限的”。
转载请注明原文地址:https://tihaiku.com/zcyy/2819195.html
相关试题推荐
[originaltext]W:(22)Whatdidyoudoduringtheearthquake?M:Stayedinbed.W:
[originaltext]W:(22)Whatdidyoudoduringtheearthquake?M:Stayedinbed.W:
Thestudenttookapart-timejobduringsummervacation______(以便于他积累工作经验).sotha
Weoftenpassonlittlebitsofinformationtoourchildren,notknowingif
Weoftenpassonlittlebitsofinformationtoourchildren,notknowingif
Weoftenpassonlittlebitsofinformationtoourchildren,notknowingif
Weoftenpassonlittlebitsofinformationtoourchildren,notknowingif
[originaltext]Duringthe19thcentury,women’seducationwasnotconsidered
[originaltext]Duringthe19thcentury,women’seducationwasnotconsidered
[originaltext]Duringthesummeryoushouldbeevenmorecarefulthanusual
随机试题
Nowadaysitisunderstoodthatadiet,whichcontainsnothingharmfulmayy
RudolfVirchowwasamongthegreatestmindsinmedicineinthe19thcentury.A
[originaltext]AnunusualformoflegalsystemprevailedinEskimosocieties
职业道德评价的作用有()。A.维护职业道德原则和规范的作用 B.教育作用
建筑平面图中凡是被剖切到的墙、柱断面轮廓线用粗实线画出,其余可见的轮廓线用中实线
左旋多巴不具有的不良反应是()A.精神障碍 B.运动过多症 C.胃肠
患儿,4岁。高热8小时、呕吐4次、惊厥2次于8月中旬入院。查体:T40℃,BP6
根据所给图形的既有规律,选出一个最合理的答案( )。 A、A B、B C
男性.17岁,发热38℃,伴乏力、食欲不振、恶心、呕吐,3天后体温正常并发现尿色
流行性感冒治疗原则
最新回复
(
0
)