首页
登录
职称英语
Polar bears are suffering in a 【C1】______(warm)world than ever before. Pol
Polar bears are suffering in a 【C1】______(warm)world than ever before. Pol
游客
2023-10-20
80
管理
问题
Polar bears are suffering in a 【C1】______(warm)world than ever before.
Polar bears live in environments too cold for most animals. During much of the year, 【C2】______live and hunt on the frozen Arctic sea ice. Nature has prepared them for the cold conditions. But nothing has prepared the bears for the danger threatening the only home they know.
The polar bears ’ world is【C3】m______.. Studies show that the polar ice 【C4】______(reduce)by 9. 8% every 10 years since 1978. Now about 20, 000 to 25, 000 polar bears live in the Arctic. Polar bears【C5】d______on the sea ice for their survival. "The sea ice is more than just this platform that the bears walk over. " says Andrew Durocher, a scientist 【C6】______ studies North American polar bear populations. " 【C7】______it, they can’ t exist. "
Some melting and refreezing of the polar ice is natural. 【C8】______, in a warmer world, these cycles speed up, and bears have less time 【C9】______(hunt). Normally, they have three months in the spring when they gain more weight. The extra fat is used later, 【C10】______the bears are not actively hunting. [br] 【C4】
选项
答案
has reduced
解析
从该句话的since 1978可以得知,本题考查现在完成时的用法,故答案是has reduced。
转载请注明原文地址:https://tihaiku.com/zcyy/3113149.html
相关试题推荐
(1)Prolongedsleepdeprivationincreasestheriskofsufferingfromastroke
(1)Prolongedsleepdeprivationincreasestheriskofsufferingfromastroke
(1)KnowingthatMrsMallardwassufferingfromahearttrouble,greatcare
(1)KnowingthatMrsMallardwassufferingfromahearttrouble,greatcare
(1)KnowingthatMrsMallardwassufferingfromahearttrouble,greatcare
Hehasbeenillwithastrangediseaselately,______I’veneverheardofbefore.
Hehasbeenillwithastrangediseaselately,______I’dneverheardofbefore.A
Polarbearsaresufferingina【C1】______(warm)worldthaneverbefore.Pol
Polarbearsaresufferingina【C1】______(warm)worldthaneverbefore.Pol
Polarbearsaresufferingina【C1】______(warm)worldthaneverbefore.Pol
随机试题
IntheUS,pollafterpollhasshownamajorityinfavourofanimalexperimen
Technically,anysubstanceotherthanfoodthataltersourbodilyormental
Asmuchasmurderisastapleinmysterystories,soislove.Lovemaybeafo
悬臂梁在自由端受集中力P作用,横截面形状和力P的作用线如图所示,其中产生斜弯曲与
以下对居住区绿地规划基本要求的叙述中,哪一条是不正确的?()A.集中与分散相
碳化深度值测量时,使用适当的工具在测区表面形成深度大于混凝土碳化深度的洞。采用一
龋病最好发牙位是A.上颌第一磨牙 B.下颌第二磨牙 C.上颌第二磨牙 D.
一切生命活动都离不开蛋白质,蛋白质是生命活动的主要承担者。下列叙述中与蛋白质无关
《地铁设计规范》GB50157--2013规定:地下铁道隧道工程的防水设计,应根
患者,男性,67岁,反复咳嗽、咳痰30余年,心悸、气促、下肢间歇性水肿2年,病情
最新回复
(
0
)