首页
登录
职称英语
Scientists had thought people began manipulating fire to create tools in Eur
Scientists had thought people began manipulating fire to create tools in Eur
游客
2023-11-17
60
管理
问题
Scientists had thought people began manipulating fire to create tools in Europe about 25, 000 years ago. But the new finds suggest that people in【C1】______is now South Africa discovered that heating a stone called silcrete would make it easier to flake, allowing them to shape more 【C2】______ blades, knives, and other tools. These early engineers likely used some of these tools to hunt and butcher wide range of【C3】______, from the aggressive buffalo to the tiny rat.
This sophisticated control【C4】______ fire reflects advanced smarts, and marks the turning point【C5】______we became " uniquely human," said study leader Kyle Brown, an archaeologist at the University of Cape Town. "These people were extremely【C6】______," Brown said. "These are not the【C7】______of the classic cavemen. "
As part of the study, the researchers 【C8】______ the processes the early Africans likely【C9】______ to make the stone tools. Heated over a fire pit, the silcrete flaked and【C10】______a glossy red color.
Such craftsmanship required thinking 【C11】______, a sign of high intelligence, Brown said. People had to【C12】______ firewood, build the fire, work the stone, and then【C13】______the handle to the stone using natural adhesives. " Because(this is)such a sophisticated technology, this is something that would【C14】______ language to【C15】______ to the next generation," he added.
But paleoanthropologist John Shea isn’t convinced by the idea that " heat treating" stone was a sign of the 【C16】______to modern human behavior. " My position is that you shouldn’t 【C17】______ this event—you have to prove it," Shea said.【C18】______, Shea praised the study, saying it will 【C19】______ people to seek out other heat-treated stone tools【C20】______ in the African record. [br] 【C20】
选项
A、found
B、undetected
C、proven
D、established
答案
B
解析
形容词辨析题。上文提到谢伊认为布朗等人应该去证明他们的观点,就需要去寻找更多尚未被发现的证据,因此[B]undetected“未被发现的”为答案。
转载请注明原文地址:http://tihaiku.com/zcyy/3195662.html
相关试题推荐
Sociologistsuse"power"torefertothecapacityofpeopletocontrolori
Sociologistsuse"power"torefertothecapacityofpeopletocontrolori
Sociologistsuse"power"torefertothecapacityofpeopletocontrolori
Sociologistsuse"power"torefertothecapacityofpeopletocontrolori
Sociologistsuse"power"torefertothecapacityofpeopletocontrolori
Sociologistsuse"power"torefertothecapacityofpeopletocontrolori
Sociologistsuse"power"torefertothecapacityofpeopletocontrolori
Sociologistsuse"power"torefertothecapacityofpeopletocontrolori
Sociologistsuse"power"torefertothecapacityofpeopletocontrolori
Sociologistsuse"power"torefertothecapacityofpeopletocontrolori
随机试题
Anewhigh-performancecontactlensunderdevelopmentatthedepartmentfor
【B1】[br]【B6】[originaltext]Languageisanamazingphenomenon.Speech—theut
随机抽取80名高中生,询问他们对高中分文理科是赞成还是反对,以此考查他们对分科的
哪一种腹外疝发生嵌顿的机会最多()A.白线疝 B.脐疝 C.直疝 D
制定贷款合同的(),即贷款合同文本内容应力求完善,借贷双方权利义务明确,条理清
杠杆率计算公式为( )。A.(一级资本+一级资本扣减项)/调整后的表内外资产余
以下关于不同类型基金的描述错误的是()。A.投资目标与范围不同的基金,其投资策
华为公司2013年9月30日银行存款日记账的余额为150万元,经逐笔核对,未达账
某厂去年生产服装2431件,今年多生产服装811件,则增产的比例约为()。
某银行在其发行的一款理财产品的宣传材料写道:“本产品预期最高年化收益××%(上不
最新回复
(
0
)