首页
登录
职称英语
Hungry prehistoric hunters, not climate change, drove elephants to extinctio
Hungry prehistoric hunters, not climate change, drove elephants to extinctio
游客
2023-07-23
19
管理
问题
Hungry prehistoric hunters, not climate change, drove elephants to extinction during the Pleistocene era(更新世), new research suggests.
At least 12 kinds of elephants【S1】______to wander about the African, Eurasian, and American continents. Today, only two【S2】______of elephants are left in South Asia and Africa. One theory for this dramatic death holds that rapid climate shifts at the end of the most recent major ice age, some 10,000 years ago,【S3】______vegetation and broke up habitats(栖息地), causing the death of those unable to adapt to the new conditions. Another【S4】______blames prehistoric humans, whose improved weapons and hunting techniques allowed them to wipe out whole herds of elephants.
To help【S5】______the debate, archaeologist Todd Surovell of the University of Wyoming, and colleagues tested two assumptions. If humans caused the elephant extinction, Surovell reasoned, the timing of the die-off in【S6】______regions should match human expansion into those regions. On the contrary, ff the extinction was【S7】______to climate change, elephants should remain in regions【S8】______colonized by humans and would only begin to die off once climate change occurred.
The team tested both theories by analyzing where and when elephants were killed. In all, the study included 41 archaeological sites on five continents. The researchers found that, as humans【S9】______out of Africa, they left a trail of dead elephants behind them. The creatures disappear from the fossil record of a region once it became colonized by humans. Modern elephants survived in refuges【S10】______to humans, such as-tropical forests, says Surovell.
A)uninviting I)hypothesis
B)migrated J)endurance
C)declined K)resolve
D)due L)polish
E)mysterious M)altered
F)specific N)used
G)already O)species
H)casually [br] 【S7】
选项
答案
D
解析
此处需要一个形容词,或者是动词的过去分问作谓语。动词的过去分词形式有migrated,altered,used, declined。从语义角度看,显然都不合适,那么只有考虑形容词。due与to搭配,意为“由于”。due to climate change意为“由于气候变化”。
转载请注明原文地址:https://tihaiku.com/zcyy/2863076.html
相关试题推荐
ShoppinghabitsintheUnitedStateshavechangedgreatlyinthelastquarte
ShoppinghabitsintheUnitedStateshavechangedgreatlyinthelastquarte
ShoppinghabitsintheUnitedStateshavechangedgreatlyinthelastquarte
ShoppinghabitsintheUnitedStateshavechangedgreatlyinthelastquarte
ShoppinghabitsintheUnitedStateshavechangedgreatlyinthelastquarte
ShoppinghabitsintheUnitedStateshavechangedgreatlyinthelastquarte
ShoppinghabitsintheUnitedStateshavechangedgreatlyinthelastquarte
ShoppinghabitsintheUnitedStateshavechangedgreatlyinthelastquarte
ShoppinghabitsintheUnitedStateshavechangedgreatlyinthelastquarte
ShoppinghabitsintheUnitedStateshavechangedgreatlyinthelastquarte
随机试题
在正向市场上,某交易者下达买入5月菜籽油期货合约同时卖出7月菜籽油期货合约的套利限价指令,价差为100元/吨。则该交易指令可以()元/吨的价差成交。A、
Whichofthefollowingstatementsbestdescribestheorganizationofthefirstp
[originaltext]Acommonchallengeformanyteachersiskeepingtheirstudents
[originaltext]MostschoolsintheUnitedStatesreceivemoneyfromfederalp
下列专项工程所采用的施工方法应进行必要的验算和说明的是( )。 A、起重吊装
下列病变属于肉芽肿性炎的有( )。A.伤寒小结 B.子宫内膜结核 C.硅肺
某市混凝土公司新建临时搅拌站,在试运行期间通过暗管将污水直接排放到周边,严重破坏
下列关于有限责任公司股东转让股权的说法正确的有( )。A.股东之间可以自由转让
我国35kV及容性电流大的电力系统中性点常采用( )。A.直接接地 B.不接
在实际工作中,如果将30写成300,那么应采用除2法来查找错账。()
最新回复
(
0
)