第三册读写课程阅读训练

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1、第三册读写课程阅读训练考试时间：150分钟满分：100分ReadingComprehension(Eachitem:2)Directions:Readthefollowingpassage(s)carefullyanddothemultiple-choicequestions.Questions1to5arebasedonthesamepassageordialog.Inthesummerof1978anEnglishfarmernamedIanStevenswasdrivinghistractorthroughafield

2、ofwheatwhenhediscoveredsomethingstrange.Someofhiswheatwaslyingflatontheground.Theflattened（被压平的）wheatformedacircleaboutsixmetersacross.Aroundthiscirclewerefoursmallercirclesofflattenedwheat.Inthefollowingyearsmoreandmoresimilarcircleswerefoundinafieldofwheatorcorn.

3、Sopeoplecannothelpbutaskthequestion:Whatcausesthecircles?Atfirst,peoplesuspectedthatthecircleswereatrick.Toprovethatthecircleswereatrick,peopletriedtocopythem:theytriedtomakecirclesexactlyliketheonesthefarmershadfound.Theycouldn’tdoit.Theycouldn'tenterafieldofgrain

4、withoutleavingtracks,andtheycouldn’tflattenthegrainwithoutbreakingit.Thecirclesareapparentlynotatrick.Manypeoplebelievethatbeingsfromouterspacearemakingthecircles.Somethinkthatthebeingsaretryingtocommunicatewithusfromfarawayandthatthecirclesaremessagesfromthem.Othe

5、rsbelievethatthebeingshaveactuallylandedonearthandthatthecirclesaremarksleftbytheirspaceships.Severaltimespeoplereportedseeingstrangeflyingobjectsnearfieldswherecircleslaterappeared.Scientistssaythey’renotsurewhatcausesthem.Theyhavesuggestedseveraltheories.Forexamp

6、le,somescientistssaythat“microbursts”ofwindcreatedthecircles.Amicroburstisadownwardrushofcoolair¾thesamedownwardrushofairthatsometimescausesanairplanetocrash.Othersscientistssaythatforceswithintheearthcausethecirclestoappear.Butcirclesoftenappearinforms.Itishardtob

7、elievethatanynaturalforcecouldcreatethoseforms.Andrecentlyfarmershavediscoverednotonlycirclesbutalsoothershapessuchastrianglesintheirfields.Couldanynaturalforcecreatedaperfecttriangleinafieldofgrain?Inthesummerof1990somescientistsspentthreeweeksinthepartofEnglandwh

8、eremanycircleshaveappeared.Theyhadallthelatesthigh-techequipment.Thisequipment¾worth1.8milliondollars¾recordednothing.Butonenight,asthescientists