卷行天下地理必修二周测一答案

卷行天下地理必修二周测一答案

卷行天下地理必修二周测一答案,我们目前整理分享卷行天下地理必修二周测一答案试题试卷及其参考答案,1如需答案 请关注微信公众号：趣找答案/直接访问www.qzda.com(趣找答案)

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以适应不同的生活条件提出疑问，故画线词指的是“三刺鱼可以适应不同的生活条件”。故选。13.D【解析】段落大意题。根据第二段Theresearchers tracked six populations of the fish beforeand after seasonal changes to their environment,usinggenome sequencing.Seasonal changes result in greatchanges in habitat structure and balance of saltwaterand freshwater,and only those fish able to tolerate theserapid changes survive into the next season.可知，第二段主要讲的是研究方法。故选D。14.B【解析】细节理解题。根据第三段“Theseresemble the habitat shifts11experienced by stickleback populations during the past10,000 years,”says Professor Barrett.“We hope togain insight into the genetic changes that may haveresulted from natural selection long in the past.”可知，三刺鱼生存的主要原因是基因变化。故选B。15Da【解析】细节理解题。根据最后一段In furtherresearch,they plan to investigate how repeatable theobserved genetic changes are,by testing whether theyshow up year after year.Doing so would demonstratetheir ability to reliably forecast the evolutionary future ofthese populations.可知，科学家研究基因变化的重复是为了预测某些物种的未来进化。故选D。第二节16~20 BGACE第二部分工语言知识运用

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