首页
登录
职称英语
Fire, scientists agree, helped give rise to a successful, thriving human pop
Fire, scientists agree, helped give rise to a successful, thriving human pop
游客
2023-10-11
49
管理
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. [br] 【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:http://tihaiku.com/zcyy/3089074.html
相关试题推荐
Scientistsbelievetheyhavesolvedoneoftheenduringmysteriesofthesex
Scientistsbelievetheyhavesolvedoneoftheenduringmysteriesofthesex
Scientistsbelievetheyhavesolvedoneoftheenduringmysteriesofthesex
Scientistsbelievetheyhavesolvedoneoftheenduringmysteriesofthesex
Scientistsbelievetheyhavesolvedoneoftheenduringmysteriesofthesex
Scientistsbelievetheyhavesolvedoneoftheenduringmysteriesofthesex
Scientistsbelievetheyhavesolvedoneoftheenduringmysteriesofthesex
Scientistsbelievetheyhavesolvedoneoftheenduringmysteriesofthesex
Scientistsbelievetheyhavesolvedoneoftheenduringmysteriesofthesex
Whenwasthelasttimeyoucomeoutofaverysuccessful【M1】______filmand
随机试题
Weknowthatmoreistobegainedwhengreatpowerscooperatethanwhenthey
维护和修理工作结束后,技术员必须联系客户进行维修后续工作。()
患者患病初期胁肋胀痛,性情抑郁,喜太息,继则纳呆腹胀,肠鸣便溏,舌苔白,脉弦缓。
以下关于会计职业道德的表述中,不正确的是()。A、会计职业道德是规范会计行为的
2020年的新冠疫情让大多数人成了宅家族,久坐时间大幅增加。有大量研究证实,久坐
下列各句中,加点的词语使用不当的一项是()。A. B. C. D.
决定人口从乡村向城市转移的规模和速度的基本力中,乡村的推力主要来源于( ),以
败毒散组成药物中有A.大黄 B.人参 C.枳实 D.白芍
(2020年真题)张某是泉嘉公司的股东,持股20%。2019年10月,张某向何某
广东欧莱公司是我国一家大型手机制造企业,其主要的目标市场是一些讲究款式的年轻消费
最新回复
(
0
)