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
129
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.
【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://kaotiyun.com/show/0hS7777K
0
大学英语四级
相关试题推荐
Inadditiontotheirmilitaryrole,thefortsofthenineteenthcenturyprovidednumerousotherbenefitsfortheAmericanWest.
Althoughthefalsebanknotesfooledmanypeople,theydidnot______tocloseexamination.
Nowadays,itwasfashionabletospeakofagenerationgap,a【S1】______betweenyoungpeopleandtheirelders.Parentscomplained
Forsometimepastithasbeenwidelyacceptedthatbabies--andothercreatures--learntodothingsbecausecertainactsleadto
InNigeria,ruleshavebeenhandeddownorallyfromgenerationtogenerationandnowformthecountry’s______law.
Thiscountrysuffered______damageduetotheflood.
Peoplehavebeenpaintingpicturesforatleast30,000years.Theearliestpictureswerepaintedbypeoplewhohuntedanimals.T
A、Theyknowwhattheywanttobuy.B、Theyhavelittlemoneytospend.C、Theytalkthemselvesoutofpurchases.D、Theyshopatth
A、Itprovidesspacefordirtyclothes.B、Itiseasytoremove.C、Itcandoubleasabriefcase.D、Itisusuallybigenoughtocar
随机试题
腺样囊腺癌的细胞成分主要为
一个人从远处走向一块竖直挂着的平面镜,他的镜内的像的大小()。
甲、乙与丙的商标使用许可,属于()使用许可。甲、乙与丙的商标使用许可,应报商标局()。
关于甲公司的商标权和乙公司的外观设计专利权,说法正确的是()。如果甲公司想要申请乙公司的外观设计专利权无效,应在()提出申请。
在社会评价中属于社会影响分析的是()。
在编制施工组织设计时,宜考虑的原则有()。
木楼地面具有( )的优点。
下列属于无效合同的情形有()。
提出学习过程应始终以人为本,必须重视学习者的意愿、情感、需要等的学习观是()。
有以下程序段:inti,n;for(i=0;i<8;i++){n=rand()%5;switch(n){case1:case3:printf(’’%d\n’’,n);break;
最新回复
(
0
)