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
Polar bears hunt seals from sea ice, but could drown if forced to swim long distances in open water. Satellite photos【B1】______b
Polar bears hunt seals from sea ice, but could drown if forced to swim long distances in open water. Satellite photos【B1】______b
admin
2014-05-30
44
问题
Polar bears hunt seals from sea ice, but could drown if forced to swim long distances in open water. Satellite photos【B1】______by America’s space agency, NASA, illustrate the fearful【B2】______to such bears. An image shows the amount of Arctic Sea ice in 1979. Another image shows the record minimum set this year on September 16th. The shrinkage is【B3】______an area greater than Texas, an impossible distance for even the【B4】______polar bear to swim.
Scientists say fossil fuels are increasing carbon【B5】______in the atmosphere. This not only warms the oceans, but threatens biodiversity in cold and warm waters alike. As the carbon dioxide is increased in the atmosphere, a high【B6】______, about 40 percent of that, goes back into the ocean, and so it’s increasing the acid content of the ocean and that’s threatening fisheries.
Scientists at a recent conference at Columbia University’s Earth Institute said less ice【B7】______draw some shipping away from the Panama Canal. This is because a northern route, though still risky, reduces the distance between Europe and Asia by about 6,500 kilometers.
Countries【B8】______the Arctic are not the only ones with interests there. There certainly will be interest in the Arctic from nations that don’t touch physically on the Arctic; that’s very clear for natural resources, for fishing, for【B9】______reasons. Energy supplies are among those reasons. Scientists say more open water in the Arctic means more gas from water and extreme weather elsewhere.
The Arctic is far from most of the world’s population. However, scientists【B10】______that distance is no guarantee people will be spared the effects of warming in the planet’s northernmost regions.
【B9】
Polar bears hunt seals from sea ice, but could drown if forced to swim long distances in open water. Satellite photos(26)released by America’s space agency, NASA, illustrate the fearful(27)threat to such bears. An image shows the amount of Arctic Sea ice in 1979. Another image shows the record minimum set this year on September 16th. The shrinkage is(28)equivalent to an area greater than Texas, an impossible distance for even the(29)mightiest polar bear to swim.
Scientists say fossil fuels are increasing carbon(30)emissions in the atmosphere. This not only warms the oceans, but threatens biodiversity in cold and warm waters alike. As the carbon dioxide is increased in the atmosphere, a high(31)proportion, about 40 percent of that, goes back into the ocean, and so it’s increasing the acid content of the ocean and that’s threatening fisheries.
Scientists at a recent conference at Columbia University’s Earth Institute said less ice(32)is likely to draw some shipping away from the Panama Canal. This is because a northern route, though still risky, reduces the distance between Europe and Asia by about 6,500 kilometers.
Countries(33)bordering the Arctic are not the only ones with interests there. There certainly will be interest in the Arctic from nations that don’t touch physically on the Arctic; that’s very clear for natural resources, for fishing, for(34)a variety of reasons. Energy supplies are among those reasons. Scientists say more open water in the Arctic means more gas from water and extreme weather elsewhere.
The Arctic is far from most of the world’s population. However, scientists(35)caution that distance is no guarantee people will be spared the effects of warming in the planet’s northernmost regions.
选项
答案
a variety of
解析
此处应填入一个形容词或介词短语修饰复数名词reasons。a variety of意为“各种各样的,种种”。
转载请注明原文地址:https://kaotiyun.com/show/vIv7777K
0
大学英语四级
相关试题推荐
SoonafterstartinghisjobassupervisoroftheMemphis,Tenn.,publicschools,KrinerCashorderedanassessmentofhisnewdi
A、Heleftthecity.B、Hewasinjuried.C、Hewaslucky.D、Hiscarwasbroken.B男士说自己出了车祸,不过只受了轻伤。可见男士受伤了,B是同义表达。
TheAntarcticozone(臭氧)holeischangingweatherpatternsacrosstheSouthernHemisphere(半球),evenaffectingthetropics,scienti
Americanshavelongpridedthemselvesasbeingpartofanoptimisticsociety.ButanewresearchdescribesAmericansaspessimis
A、Dogshavecomfortedthousandsoflonelysoulsintheworld.B、Researchondogshasprovidedreferencesforhuman.C、Dogshave
EightEssentialLifeSkillsThatSchoolsCanTeachOurKidsIlearnedatanearlyagefrommymotherthattherewasmoreto
A、Thedogandhumanmembersofthefamilyarefriends.B、Thetimeanddistancesarefixed.C、Peoplethinkthemarchesmakethem
A、Bysize.B、Bycolor.C、Byshape.D、Bytaste.B
A、Toreviewthetextbook.B、Tohaveagoodrest.C、Toenjoythenight.D、Todrinksomefreshwater.B
A、Partofthedriedmushroomshavebeguntodecay.B、Thedriedmushroomsdidn’tarriveontime.C、Partofthedriedmushroomswe
随机试题
患者,女性,30岁。腹部外伤2小时,疑有内脏损伤。护理措施不包括
可以诱发鱼、禽、大鼠和猴子等多种动物肝癌的真菌毒素是()。
某建筑内的消火栓箱内配备SN65消火栓、25m长的衬胶水龙带和喷嘴直径为19mm的水枪,若水枪充实水柱长度为13m,水枪出流量为5.5L/s,水枪水流特性系数为1.577,则消火栓栓口的压力应为()。
依据《中华人民共和国草原法》,应当被划为基本草原的是()。
预警系统主要由()两部分组成。
近期内拟建设的地区编制修建性详细规划地域范围一般应在()。
确定施工进度控制目标的主要依据有()等。
A、 B、 C、 D、 B第一列的直线数分别是8、7、6,第二列的直线数分别是3、4、5,第三列的直线数分别是2、1、(0),所以选择B。
要在窗体中显示当前系统日期和时间:则应将相应文本框的控件来源属性设置为
つくえの(うえ)にえんぴつが(はっぽん)あります。
最新回复
(
0
)