高考英语二轮复习与增分策略 专题二 七选五 第一节 四大解题技巧课件

第一节四大解题技巧 专题二七选五 栏目索引 一 扫读全文 确定关键词 二 语意判断 三 黄金三步骤 四 代入复读 2017 全国 IfanyonehadtoldmethreeyearsagothatIwouldbespendingmostofmyweekendscamping Iwouldhavelaughedheartily Campers inmyeyes werepeoplewhoenjoyedinsectbites ill cookedmeals anduncomfortablesleepingbags Theyhadnothingincommonwithme 36 一 扫读全文 确定关键词 典例1 Thefriendswhointroducedmetocampingthoughtthatitmeanttobeapioneer 37 C Thetriptheytookmeonwasaroughone Wesleptinatent cookedoveranopenfire andwalkedalongdistancetotaketheshowerandusethebathroom ThisbriefvisitwithMotherNaturecostmetwodaysofffromwork recoveringfromabadcaseofsunburnandthedoctor sbillformyson sfoodpoisoning Iwas nevertheless talkedintogoingonanotherfun filledholidayinthewilderness 38 A Thistimetherewasnotent Instead wehadapop upcamperwithcomfortablebedsandanairconditioner Mynature lovingfriendshadrememberedtobringallthenecessitiesoflife 39 F Afterthetrip myfamilybecamequiteinterestedincamping Wehavedonealotofitsince Recently weboughtatwenty eight foottraveltrailercompletewithabathroomandabuilt inTVset Thereisaseparatebedroom amodernkitchenwitharefrigerator Thetrailerevenhasmatchingcarpetandcurtains 40 E ImustsaythatIhavecertainlycometoenjoycamping Itmustbetruethatsoonerorlater everyonefindshisorherwaybacktonature Irecommendthatyoufindyourwayinstyle A Thistimetherewasnotent B Thingsaregoingtobeimproved C Thetriptheytookmeonwasaroughone D Iwastolearnalotaboutcampingsincethen however E ImustsaythatIhavecertainlycometoenjoycamping F Afterthetrip myfamilybecamequiteinterestedincamping G Therewasnoshadeasthetreeswerenomorethan3feettall 解析扫读全文可知本文是一篇记叙文 关键词是露营 camping 根据前文可知三年前作者认为露营和自己无关 而后文中表明作者热爱露营 暗示此处作者对待露营的情感态度应该出现转变 D选项中的however表示转折 且sincethen 自从那时候起 和前文时间吻合 故选D 答案 解析 点津 七选五是一篇短文 因此多数阅读技巧对此适用 扫读全文 尤其是首尾段 首尾句以及独立成段的句子和文章中带转折词的句子等 目的是找出主题词并掌握文章的主要内容 正确答案往往与主题词有高度的重合性 形似 意似 2016 全国 Secretcodes 密码 keepmessagesprivate Banks companies andgovernmentagenciesusesecretcodesindoingbusiness especiallywheninformationissentbycomputer Peoplehaveusedsecretcodesforthousandsofyears 36 D Aslongastherehavebeencodes peoplehavetriedtobreakthem Codebreakingneverlags 落后 farbehindcodemaking Thescienceofcreatingandreadingcodedmessagesiscalledcryptography 牛刀小试1 Therearethreemaintypesofcryptography 37 E Youcanhideamessagebyhavingthefirstlettersofeachwordspellitout Forexample thefirstlettersof Myelephanteatstoomanyeels spelloutthehiddenmessage Meetme 38 G Anotherwaytohideamessageistousesymbolstostandforspecificlettersofthealphabet Youmightrepresenteachletterwithanumber forexample Let snumberthelettersofthealphabet inorder from1to26 Ifwesubstituteanumberforeachletter themessage Meetme wouldread 135520135 Acodeusessymbolstoreplacewords phrases orsentences Toreadthemessageofarealcode youmusthaveacodebook 39 F Withacodebook youmightwritedownwordsthatwouldstandforotherwords Forexample bridge mightstandfor meet and out mightstandfor me Themessage Bridgeout wouldactuallymean Meetme 40However itisalsohardtokeepacodebooksecretforlong Socodesmustbechangedfrequently A Itisveryhardtobreakacodewithoutthecodebook B Inanylanguage somelettersareusedmorethanothers C Onlypeoplewhoknowthekeywordcanreadthemessage D Aslongastherehavebeencodes peoplehavetriedtobreakthem E Youcanhideamessagebyhavingthefirstlettersofeachwordspellitout F Withacodebook youmightwritedownwordsthatwouldstandforotherwords G Anotherwaytohideamessageistousesymbolstostandforspecificlettersofthealphabet 答案 解析 解析扫读全文可知本文是一篇说明文 向读者介绍了密码 code 在生活中的作用及密码学 cryptography 的三种主要类型 分析语境可知 该处仍在谈论密码本 且与下句构成转折 由此可锁定A项为正确答案 2017 全国 片段 Wesleptinatent cookedoveranopenfire andwalkedalongdistancetotaketheshowerandusethebathroom ThisbriefvisitwithMotherNaturecostmetwodaysofffromwork recoveringfromabadcaseofsunburnandthedoctor sbillformyson sfoodpoisoning Iwas nevertheless talkedintogoingonanotherfun filledholidayinthewilderness 38Instead wehadapop upcamperwithcomfortablebedsandanairconditioner Mynature lovingfriendshadrememberedtobringallthenecessitiesoflife 二 语意判断 典例2 解析根据前文 Wesleptinatent 可知作者第一次露营时住帐篷 而后文中 Instead wehadapop upcamperwithcomfortablebedsandanairconditioner 说明作者这次露营有床有空调 由此可知 这次没有帐篷了 故选A A Thistimetherewasnotent B Thingsaregoingtobeimproved C Thetriptheytookmeonwasaroughone D Iwastolearnalotaboutcampingsincethen however E ImustsaythatIhavecertainlycometoenjoycamping F Afterthetrip myfamilybecamequiteinterestedincamping G Therewasnoshadeasthetreeswerenomorethan3feettall 答案 解析 点津 七选五解题时要读懂前后文的句子 弄清楚前后的逻辑关系 然后选取正确答案 因此正确理解设空前后文是解题的关键 拿到试题后要瞻前顾后 科学解题 2016 全国 片段 Peoplehaveusedsecretcodesforthousandsofyears 36Codebreakingneverlags 落后 farbehindcodemaking A Itisveryhardtobreakacodewithoutthecodebook B Inanylanguage somelettersareusedmorethanothers C Onlypeoplewhoknowthekeywordcanreadthemessage D Aslongastherehavebeencodes peoplehavetriedtobreakthem E Youcanhideamessagebyhavingthefirstlettersofeachwordspellitout F Withacodebook youmightwritedownwordsthatwouldstandforotherwords G Anotherwaytohideamessageistousesymbolstostandforspecificlettersofthealphabet 牛刀小试2 答案 解析 解析联系下一句 创设密码和破译密码总是相伴而生的 可以推断此处意思是 只要有密码存在 人们总是千方百计地进行破译 故选D项 2017 全国 片段 37Wesleptinatent cookedoveranopenfire andwalkedalongdistancetotaketheshowerandusethebathroom A Thistimetherewasnotent B Thingsaregoingtobeimproved C Thetriptheytookmeonwasaroughone D Iwastolearnalotaboutcampingsincethen however E ImustsaythatIhavecertainlycometoenjoycamping F Afterthetrip myfamilybecamequiteinterestedincamping G Therewasnoshadeasthetreeswerenomorethan3feettall 三 黄金三步骤 典例3 答案 解析 解析由空后 Wesleptinatent cookedoveranopenfire andwalkedalongdistancetotaketheshowerandusethebathroom 可知作者第一次露营的条件很艰苦 C选项 Thetriptheytookmeonwasaroughone 中的rough暗示了这一点 符合语境 故选C 点津 步骤一 从原文设空的前后寻找关键词 步骤二 阅读各个选项 标记关键词 步骤三 把两类关键词进行匹配 迅速锁定正确答案 2016 全国 片段 Therearethreemaintypesofcryptography 37Forexample thefirstlettersof Myelephanteatstoomanyeels spelloutthehiddenmessage Meetme A Itisveryhardtobreakacodewithoutthecodebook B Inanylanguage somelettersareusedmorethanothers C Onlypeoplewhoknowthekeywordcanreadthemessage D Aslongastherehavebeencodes peoplehavetriedtobreakthem E Youcanhideamessagebyhavingthefirstlettersofeachwordspellitout F Withacodebook youmightwritedownwordsthatwouldstandforotherwords G Anotherwaytohideamessageistousesymbolstostandforspecificlettersofthealphabet 牛刀小试3 答案 解析 解析由空后举例可知 这里讲的是选取每个单词的首字母 thefirstletters 这一方法来隐藏信息 与E hideamessagebyhavingthefirstlettersofeachwordspellitout 内容相对应 2017 全国 片段 39 F Afterthetrip myfamilybecamequiteinterestedincamping Wehavedonealotofitsince Recently weboughtatwenty eight foottraveltrailercompletewithabathroomandabuilt inTVset Thereisaseparatebedroom amodernkitchenwitharefrigerator Thetrailerevenhasmatchingcarpetandcurtains 40Itmustbetruethatsoonerorlater everyonefindshisorherwaybacktonature Irecommendthatyoufindyourwayinstyle 四 代入复读 典例4 A Thistimetherewasnotent B Thingsaregoingtobeimproved C Thetriptheytookmeonwasaroughone D Iwastolearnalotaboutcampingsincethen however E ImustsaythatIhavecertainlycometoenjoycamping F Afterthetrip myfamilybecamequiteinterestedincamping G Therewasnoshadeasthetreeswerenomorethan3feettall 答案 解析 解析将39题答案带入原文可知作者全家都喜欢上了露营 根据40题空后的 Itmustbetruethatsoonerorlater everyonefindshisorherwaybacktonature Irecommendthatyoufindyourwayinstyle 可知 作者希望每个人都能找到适合自己的回归自然的方法 E选项 我必须得承认我真的开始享受露营了 既是对上段中作者态度转变的一个总结 也很好地衔接了后文 故选E 点津 重新阅读相关词句 重点做没做出的或不确定的题 此时可将已选出的答案代入原文 利用排除法 同时检查核实已选出的答案 看文章从内容上是否语义连贯合理 语篇结构上是否通顺 合乎逻辑 写作思路是否清晰 格式及用语是否恰当贴切 如果所选的答案可以满足上述标准 则表明所选的答案基本正确 2016 全国 片段 Therearethreemaintypesofcryptograph