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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
2015-03-29
44
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.
【C16】
选项
A、adoptable
B、frightened
C、distressed
D、adaptable
答案
D
解析
空格前为系动词are,其后为形容词persistent,中间用and连接,可以推出空格处也需要填入一个形容词并且也能表达出早期人类的优点。结合四个选项,只有adaptable“能适应的”符合句意。adoptable意为“可采用的;可收养的”;frightened意为“害怕的”;distressed意为“痛苦的;忧虑的”。
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浙江省大学英语三级题库大学英语三级分类
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浙江省大学英语三级
大学英语三级
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