山东省烟台市2021-2022学年高二下学期期末考试英语试题pdf答案

山东省烟台市2021-2022学年高二下学期期末考试英语试题pdf答案，目前全国100所名校答案网已经汇总了山东省烟台市2021-2022学年高二下学期期末考试英语试题pdf答案的各科答案和试卷，更多全国100所名校答案请关注本网站。

第一节审题指导本题属于命题作文，题目要求非常清晰，对于考生而言审题难度较低，因此逻辑清晰、观，点明确的内容以及高级词语和表达方式的使用将成为亮点和加分项。在自主学习的意义方面，考生可围绕自主学习对于学习效率、学习方法、学习模式和学习成就感的影响等多方面展开论述；在自主学习的建议方面，考生可结合实际情况提出建议。【参考范文】Be Independent LearnersIndependent learners refer to those who finish learningtasks on their own.They are more likely to become self-motivated learners in the long run.Independent learning turnsstudents into the main role in the learning process,wherethey tend to think creatively and learn actively.It helpsstudents know about themselves better and learn at their ownpace.By working out problems individually,students gain asense of achievement,which in turn makes them moreconfident and motivated.To be an independent learner,you are expected to thinkindependently instead of relying on teachers for helpwhenever you meet difficulties.Setting clear learning goalsand getting yourself fully involved in the learning process areessential.Only by finishing learning tasks on your own canyou truly understand what you are learning and develop yourproblem-solving abilities.亮点评析在内容要点方面，本篇范文紧扣题目要求，表达完整，结构清晰。在语言表达方面，作者用词准确地道，使用了一些高级词汇，如self-motivated,in the long run,achievement,independently等。本篇范文的句式和语法结构灵活而丰富多样，作者巧妙地使用了定语从句(where they tend to thinkcreatively and learn actively,which in tum makes them moreconfident and motivated),宾语从句(what you are learning)等，这些都是文章的得分亮点。

11.D【命题意图】本题考查双曲线的简单几何性质、二倍角公式，考查分类讨论思想，体现了数学运算、逻辑推理等核心素养【解析】连接AF2·由圆的几何性质，得AF2⊥F,F2·在Rt△AF,F2中，易得点B为AF,的中点，则点B为以AF,为直径的圆的圆心.由同弧所对的圆心角是圆周角的两倍，得∠ABF2=2∠AF,F2,∴.si∠ABF2=s血2LAF,R-2nLAF,FLAF,R-g又m2LAF,F+cos2LAF,R=1,sim∠A,R=号，cosLAF,F=号或sim∠AR,F=号，cos∠AF,R=号（负值已舍去）.当sin∠AF,F2=号时，令1AE,1=3m(m>0),则1A51=5m,1F,F21=4m,∴.2c=|F,F2|=4m,∴.c=2m.由双曲线的定义，得2a=lAF,I-IAF2I=2m,则a=m,∴.e=后-=2当m∠ArR=号时，令1a1=4(>0)则IAF,I=5k,IF,F2I=3k,.2c=IF,F2I=3k.由双曲线的定义，得2a=14R,1-1A1=ke-器染=3综上可得，双曲线的离心率为2或3.故选D.