试讲高考阅读题

Abuild-it-yourselfsolarstill（蒸馏器）isoneofthebestwaystoobtaindrinkingwaterinareaswheretheliquidisnotreadilyavailable.DevelopedbytwodoctorsintheUSDepartmentofAgriculture,it’sandexcellentwatercollector.Unfortunately,youmustcarrythenecessaryequipmentwithyou,sinceit’sallbutimpossibletofindnaturalsubstitutes.Theonlycomponentsrequired,though,are5’sheetofclearorslightlymilkyplastic,sixfeetofplastictube,andacontainer—perhapsjustadrinkingcup—tocatchthewater.Thesepiecescanbefoldedintoaneatlittlepackandfastenedonyourbelt.

Toconstructaworkingstill,useasharpstickorrocktodigaholefourfeetacrossandthreefeetdeep.Trytomaketheholeinadampareatoincreasethewatercatcher’sproductivity.Placeyourcupinthedeepestpartofthehole.Thenlaythetubeinplacesothatoneendrestsallthewayinthecupandtherestofthelinerunsup—andout—thesideofthe

laythetubeinplacesothatoneendrestsallthewayinthecupandtherestofthelinerunsup—andout—thesideofthehole.Next,covertheholewiththeplasticsheet,securingtheedgesoftheplasticwithdirtandweightingthesheet’scenterdownwitharock.Theplasticshouldnowformacone(圆锥体）with45-degree-angledsides.Thelowpointofthesheetmustbecentereddirectlyover，andnomorethanthreeinchesabove,thecup.Thesolarstillworksbycreatingagreenhouseundertheplastic.Groundwaterevaporates(蒸发）andcollectsonthesheetuntilsmalldropsofwaterform,rundownthematerialandfalloffintothecup.whenthecontainerisfull,youcansuchtherefreshmentoutthroughthetube,andwon’thavetobreakdownthestilleverytimeyouneedadrink.32.Whatdoweknowaboutthesolarstillequipmentfromthefirstparagraphisdelicate’sexpensive’scomplex'sportable33

Whatdoestheunderlinedphrase”thewatercatcher”inparagraphtubestillholecup34

What’sthelaststepofconstructingaworkingsolarstillaholeofacertainsize

thecupinplacethesheet’scenterdowntheholewiththeplasticsheet35

Whenasolarstillworks,dropsofwatercomeintothecupformplastictubetheholeopenairthesheet反思：先读题，再回到原文多互动，提问学生，让学生分享自己的解题思路生僻词要写出来，画出来，加深记忆文体的介绍要更加详细，说明文太多累赘口头语篇章讲解说明文特点：平实客观，解释或者探讨各种问题，入机器的制造过程，自然现象产生的原因，工程项目的规划或问题的解决方案，科学研究最新成果，新发明、新创造、来龙去脉解决方法，目的是让读者获取知识、信息，对说明对象有所了解往往涉及到实验、研究者、研究方法、研究流程等题材，出现较难专有词汇，长句子使用较多，主从复合句、同位语、插入语、非谓语动词形式和被动语态使用率较高。语篇模式比较固定、简介、多使用平行结构。平时多关注科学题材，了解基本科普知识，对较难理解的句子利用语法结构去分析，找准主题句子，把握中心，破解题目。时间、地点、逻辑顺序说明方法：举例子、分类、对比、下定义、列数字关键是：抓住事物的特点，书评对象本质的特征题型：信息查找题、生词词义、代词指代重点句子、词汇讲解一定要写出来、划出来，举一反三教