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
Fire, scientists agree, helped give rise to a successful, thriving human population by providing heat for cooking and protection
Fire, scientists agree, helped give rise to a successful, thriving human population by providing heat for cooking and protection
admin
2019-03-10
55
问题
Fire, scientists agree, helped give rise to a successful, thriving human population by providing heat for cooking and protection from the cold.
But they don’t agree【C1】______when humans began using fire. Some researchers argue that it【C2】______more than a million years ago when early humans【C3】______their way to Europe from Africa, and【C4】______say it happened much later. Now, a new study reveals that humans did not【C5】______fire until about 400 000 years ago.
Two archaeologists(考古学家)in the US report their【C6】______in the current issue of the Proceedings of the National Academy of Sciences. They looked at excavation(发掘)reports and studies from 141 sites in Europe that were【C7】______1.2 million and 35 000 years old. They think there is no clear evidence of【C8】______fire use until about 400 000 years ago. In Africa,【C9】______there are several sites where there was evidence of fire, those may have been【C10】______fires that occurred in the African grassland.【C11】______, there are also sites older than 400 000 years in Europe that indicate the【C12】______of humans, with the oldest, in Spain, more than a million years old. This means that【C13】______Europe’s extreme winter climates, early humans found a way to【C14】______without the warmth of a fire.【C15】______the researchers mention, early humans are【C16】______and persistent(坚持的). But some researchers【C17】______that it is still a puzzling explanation and it still【C18】______some serious thinking about how【C19】______the human being could have survived on a seasonally【C20】______food supply despite having small teeth and small guts. Up to now, no one has solved this problem yet.
【C15】
选项
A、Because
B、As
C、Since
D、For
答案
B
解析
该空格要求既要能引导从句,又要在从句中充当语法成分,作mention的宾语。结合备选项,只有As符合要求,意为“正如,依照”。
转载请注明原文地址:https://kaotiyun.com/show/Cf5K777K
本试题收录于:
浙江省大学英语三级题库大学英语三级分类
0
浙江省大学英语三级
大学英语三级
相关试题推荐
A、Latercolonistsdidnotknowhowtothatch.B、Thatchingwasconsidereddangerous.C、Otherroofingmaterialswereavailable.D、
LookatthefollowingpictureandwriteanarticleentitledTheLawontheProtectionofMinors,whichshouldmeetthefollowing
Astheworld’surbanpopulationgetsbigger,citiesarestrugglingtoprovidethebasicservicesthattheirresidentsneed.One
Astheworld’surbanpopulationgetsbigger,citiesarestrugglingtoprovidethebasicservicesthattheirresidentsneed.One
Astheworld’surbanpopulationgetsbigger,citiesarestrugglingtoprovidethebasicservicesthattheirresidentsneed.One
Mike:Whyhaven’tmorewomenchosencareersinscience?Alice:Well,firstofall,mostchildrengrowupwiththeideathatboys
Wecandowithoutluxuriesandentertainment.However,food,shelter,andclothingare______.
Playinggameshelpschildrenlearntofollowrules,taketurnsand______otherkids.
Water...thisfive-letterwordisonethatCaliforniansseealmostdailyinheadlines.Howtodamit,howtosellit,howtou
A、Becauseit’sinteresting.B、Becauseit’senjoyable.C、Becauseit’seconomical.D、Becauseit’spractical.D文中提到学生选计算机课是因为它更实用。
随机试题
淬硬钢经淬火后,塑性降低,因此切削过程塑性变形小,不易产生积屑瘤,可减小加工表面粗糙度值。()
国际法的主体包括()
下列关子哮喘病人的护理措施,正确的有()
乳腺X线摄影最常使用的附加体位是
甲(17岁)犯盗窃罪。下列选项中乙、丙、丁、戊构成包庇罪的有()。
张先生夫妇今年均已40岁,家里存款在50万元左右。他和妻子两个人每月收入大约1万元,月花费近4000元。张先生和妻子计划在10年后退休,假设他们退休后再生存30年,且他们每年花费16万元(注:这笔钱在每年年初拿出),减掉基本养老保险和保险公司给予的保险金3
按投资者所拥有的权利划分,金融工具可分为()。
本次录用的公安干警要到偏远的基层去工作,那里人生地不熟,生活条件艰苦,在这种情况下,该怎么办?
恒定刺激法测量阈限时,刺激系列包括的刺激个数通常为()
Thehappieryouare,thebetter,right?Notnecessarily.Studiesshowthatthereisadarkersidetofeelinggoodandthatthe【C
最新回复
(
0
)