河南省2024-2025学年度第一学期九年级阶段性测试卷（3/4）英语答案

河南省2024-2025学年度第一学期九年级阶段性测试卷（3/4）英语答案正在持续更新，目前2026卷行天下答案网为大家整理了相关试题及答案，供大家查缺补漏，高效提升成绩。

本文从以下几个角度介绍。

1、河南省2023-2024学年度九年级期末检测卷英语
2、河南省2024到2024英语九年级
3、河南省2023-2024学年度九年级期末考试
4、2024到2024河南期中考试九年级
5、2024至2024河南九年级期末考试
6、2024—2024河南九年级考试
7、河南省2023-2024学年第一学期期末教学质量检测英语
8、河南省2024期末九年级试卷
9、河南省2024～2024学年度九年级期末检测卷
10、2024河南省九年级学业水平考试仿真试卷a英语

23:189G8489m87PCC.Its working condition is demanding.D.It turns carbon into building materials.4英语第4页（共10页）31.What is the experts'opinion about DAC technology?A.It will make a difference soon.B.It can replace renewable energy in time.C.It will result in more environmental concerns.D.It can work together with other climate measures.DEach of us individually is the accumulated()product of thousands of generationsthat have come before us in an unbroken line.Our culture and technology today are also theresult of thousands of years of accumulated and remixed cultural knowledge.Cumulativeculture allowed humans to adapt to a diversity of environments and challenges.But,it isunclear when cumulative culture first developed during ancient human evolution."Our earliest ancestors have been successful at adapting to ecological conditions thatrequire different kinds of problems to be solved,"said Perreault,an associate professor withthe School of Human Evolution and Social Change."Cumulative culture is key because itallows human populations to build on and recombine the solutions of prior generations and todevelop new complex solutions to problems very quicklyAs a baseline for the complexity of stone tool technologies achievable without cumulativeculture,Perreault analyzed technologies used by chimpanzees ()He then analyzedchanges in the complexity of stone tool-making techniques across the past 3.3 million years ofthe archaeological record to explore the origin of cumulative culture.He broke down thecomplexity of the stone tool technologies by the number of steps that each tool-making sequence(序列)involved,The results suggested that from around 3.3 to 1.8 million years ago,stone tool-makingsequences remained within the range of the baselines.From around 1.8 million to 600,000years ago,making sequences began to slightly top the complexity baseline.But,after around600,000 years ago,the complexity of making sequences rapidly increased."By 600,000 yearsago or so,ancient human populations started relying on unusually complex technologies,andwe only see rapid increases in complexity after that time as well,said Perreault.Tool-assisted food-hunting may have been the motive for the earliest beginning of theevolution of cumulative culture.Early ancient humans,3.4 to2 million years ago,likely reliedon strategies that require tools-like accessing meat and organs-leading to changes in brainsize,lifetime and biology that set the stage for cumulative culture5英语第5页（共10页）32.What does cumulative culture refer to according to the text?A.Emphasizing individual development.B.Paying attention to reforming social structure.园☑存网盘页面管理转Word笔记标注