初中科普英语竞赛Word文件下载.docx
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初中科普英语竞赛Word文件下载.docx
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同学们在做选择填空时应将全句通读一遍,了解句意,再审查选项,将每道题要考的内容进行分类,判断一下属于语法、习惯用语、词汇还是科普知识。
确定了考点,在联系及考点相关的知识要点,对各选项进行比较、判断、进而选出答案。
所以,可以这样认为:
科普英语竞赛=科普知识+英语能力+应试技巧
试看下例题:
1.Whentheantsarefirsthatched,theyareverysmalland______.
A.hopeless
B.useless
C.helpless
D.legless
2.
However,theyoungwhale’s______healthcontinuedtotestYip,amarinescientistandhisfriends.
A.delicious
B.delicate
C.delayed
D.dear
3.Pigpoopishighinundigestedphosphorous,itleadstogreatdamagewhenit’s______manure.
A.usedas
B.usedto
C.beenusedto
D.beingusedto
4.Theabilityofthealligatorto______tochangingconditionshasalsohelpedtheanimalmakeabigcomeback.
A.adopt
B.beadopted
C.adapt
D.beadapted
5.Avoidingpredators______themostimportantreasonwhyanimalsfly.
A.arereally
B.is
C.maybe
D.are
6.Scientistsconcludedthatheat______killedthehornets.
A.
lonely
B.alone
C.alive
D.lonesome
答案:
1.C
2.B
3.A
4.C
5.B
6.B
在做单项选择题时,同学们除应具有较扎实的语言基础知识和科普知识外,掌握一些解题方法是很有必要的.
单项选择解题思路及方法总汇一
注意同义、近义词汇的积累、辨析
作为选择填空的基础考查内容,近义词汇或词组的积累及辨析,考得是英语学习平常的用心及工夫。
例:
1.Suddenlythebatteryonyourmobilephonehas______,youcan’tmakeanycallforhelp.
rundown
B.runafter
C.runoff
D.runout
rundown跑下、追溯、用完、浏览
runafter追捕、追求、跟踪、
runoff逃跑、流出
runout跑出、离开、完成、被用完、放逐
Feelingsofpain______whensignalsfromnerveendingsintheskinaresenttothebrain.
A.recordB.resourceC.resultD.rescue
3.Whenaplantoranimaldies,thecarbon14inthecellsbeginsto__
A.breakinB.breakthroughC.breakupD.breakdown
4.
Thegovernmentpassedthelawstoprotecttheplantsandanimalsonthe______specieslist.
endangeredB.dangerousC.endangeringD.danger
直接运用语法知识进行选择
掌握初中阶段所出现的几种主要时态和语态的用法、结构、及之连用的状语及各自的特殊用法。
重点要分清现在完成时、一般过去时的用法。
对宾语从句、状语从句、动词不定式、比较等级以及它们的用法规则都要一一弄清楚。
还要注意固定搭配、习惯用语、动词的时态和语态、动词辨析以及不同词性的词的用法。
5.--Willyoucometothenetbarswithme?
--Sorry.Mymotheralwaystellsme______there.
A.notgo
B.go
C.nottogo
D.togo
6.Cucumberbeetled,which,____,couldproduce33millionrootworms-aseriousagriculturalpest.
A.ifallowedtolayeggs
B.ifallowingtolieeggsC.ifallowlayingeggs
D.iftoaloelyingeggs
7.Allsubstancesare______verytinyparticlescalledatoms.
A.madefrom
B.madeupof
C.madeby
D.madeof
8.Asweallknowsoundmakesairvibrate,thus______soundwaves.
A.makes
B.make
C.making
D.tomake
9.Gerorge______inthiscollegeforfortyyearsbythetimeheretired.
A.willwork
B.willhaveworked
C.hadworked
D.willbeworking
三、注意排除思维定试的干扰
在学习过程中,同学们进行了相当多的习题练习,因此对有些类型的题目自然而然地产生思维定试.当碰到一些已发生了变化的新题目,如果不作分析而是凭老经验,想当然办事,势必造成错误.为此,必须排除思维定试的干扰,以便选出正确的答案.
10.—Haveyouseen______pen?
Ileftitherethismorning.
__Isit______blackone?
IthinkIsawitsomewhere.
a/the
B.the/the
C.the/a
D.a/a
11.Shecan’thelp______thehousebecauseshe’sbusymakingacake.
A.toclean
B.cleaning
C.cleaned
D.beingcleaned
12.TheschoolsinChinaaredifferentfrom_______.
A.Americaschools
B.thatofAmerica
C.America
D.thoseinAmerica
四、找出关键词再进行选择
许多题目中都有这样一些词,它们对于快速而准确地判定答案起着至关重要的作用.我们称这些词为关键词.找到句中的关键词,也就找到了解题的突破口.
13.Hehardlyhurthimselfintheaccident,______?
A.doesn’the
B.didn’the
C.didhe
D.doeshe
五.注意分析句子成分
明确句子成分,特别是选项在句子中担任的句子成分,有时对于我们选择正确答案是很有帮助的.
14.OnSaturdayafternoon,Mr.Greenwenttothemarket______somebananasandvisitedhiscousin.
A.bought
B.buying
C.tobuy
D.buy
15.______Marswouldbelikelivingonaveryhighmountain.
A.Livedto
B.Livingon
C.Liveon
D.Livefor
16.Whenwehangupwetclothednearafire,steamcanbeseen_____fromthem.
A.rise
B.rising
C.raised
D.raise
答案:
1.D
2.D
3.C
4.A5.C6.A7.B
8.C9.B
10.D
11.A
12.D
13.C
14.A
15.B
16.
六、注意句式的变化
在考查考生对基础知识的掌握过程中,命题人会通过改变句子结构的方式来增加试题难度.碰到这类题材时,要沉着冷静,仔细分析,以便选出正确答案.
1.
Johnplaysfootball_____,ifnotbetterthan,David.
aswell
B.aswellas
C.sowell
D.sowellas
2.
Ratherthan______onacrowdedbus,healwaysprefers______abicycle.
A.ride/ride
B.riding/rideC.ride/toride
D.toride/riding
七、选项类推法
如果对题目的备选答案没有十分把握或把握很小,不妨利用“如果A对,那么B也对”的类推法,从而可将A、B予以否定.
3.—Who’sthemanatthedoor?
--_________.
A.Heisadoctor
B.Heisafriendofmine
C.Heisafamoussinger
D.Heistwenty
八、比较排除法
根据题干提供的休息,先把一眼就看出的干扰项排除,缩小选择范围,然后将剩余的选项填入空白处进行检查,辨别真伪.
4.
Thegirlaskedtheteacher___________.
A.whatdoesthemuseumlookslikeB.whatdidthemuseumlooklike
C.whatthemuseumlooksliked
D.whatthemuseumlookedlike,
5.Thereis______milkhere,buttherearequite____emptyglasses.
A.little/afew
B.few/afewC.little/alittle
D.few/little
6.Peopleshouldget______ofsleepastheyneedtofeelrested.
A.asmanyhours
B.asmuchhoursC.somuchhour
D.somanyhour
7.MyEnglishisverypoor.I_____maths
____English.
A.prefer/to
B.like/thanC.learn/than
D.have/by
8.--Pleasegivemea_____whenyouarriveinBeijing.
--Allright.I’lltellyoueverythingwhenIgetthere.
A.newspaper
B.ticket
C.calling
D.ring
9.Frenchscientistshavefoundthatthemoonhasanotherunexpected______:
itaffectsEarth’sclimate.
A.insignificance
B.influence
C.instructionD.intelligence
10.Seedsfromothertreescouldnotgrowbecausetherewere_____plantsontheforestfloor.
A.toomany
B.toomuchC.agreatdealD.alargeamount
11.Everybodyknowsthatnolivingthingscanlivewithoutairorwater.It’sa(a)____sense.
A.commonB.usualC.averageD.ordinary
九、吃透语境
把握题干的全部信息,进行合理的推断,作深层的理解,并从词法、句法和惯用法以及习惯搭配等角度全方位考虑.
十、逻辑推理法
有些题目的选项,从语法上分析不止一个对,有的甚至全对,但句义不符合逻辑,所以要通过推理才能得出正确的答案.
12.Wearetired.Let’sstop_____andhavearest.
A.toworkingB.workC.toworkD.working
13.Everythingweeatanddrinkcontainssomesalt;
wecanmeetthebody’sneedforitfromnaturalsourceswithout______thesaltbottle.
A.referringto
B.turningtoC.keepingout
D.puttingaway
14.Thereport,preparedbyagroupoftopscientists,outlinesthechangesthatAmericansmustmake______thethreatofglobalwarming.
A.reduceB.toreduceC.increaseD.toincrease
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