七年级英语完形填空与阅读理解强化训练31.test8阅读理解B2.test8阅读理解CWavesarebeautifultolookat,buttheycandestroyshipsatsea,aswellashousesandbuildingsneartheshore.Whatcauseswaves?Mostwavesarecausedby

　　七年级英语完形填空与阅读理解强化训练3

　　1.test8阅读理解B

　　2.test8阅读理解C

　　Wavesarebeautifultolookat,buttheycandestroyshipsatsea,aswellashousesandbuildingsneartheshore.Whatcauseswaves?Mostwavesarecausedbywindsblowingoverthesurfaceofthewater.Thesunheatstheearth,causingtheairtoriseandthewindstoblow.Thewindsblowacrossthesea,pushinglittlewavesintobiggerandbiggerones.

　　ifthewindisstrongenough,thewaveswillbebigenough.andifthewindsblowlonger,thewaveswillbelarger.inasmallriverthereeillneverbebigwaves.butatseathewindcanbuildupgreatwaves.

　　ifthewindisblowingattenkilometersanhour,mostwavesatseawillbeaboutonemeterhigh.ifitisblowingatonehundredand

　　twentykilometersanhour,mostwaveswillbeabouttwelvemetershigh.in1933theUSNreportedthelargestwaveinhistory.itrosetothirty-fourmetershigh.

　　（）11.sometimeswaveswill（）

　　A.dosomewashingforpeople

　　B.makeshipsgoingatsea

　　C.dobadthingsatsea

　　D.helppeopletoseiminthesea

　　（）12.wavesaremadeby（）

　　A.thesun

　　B.thesea

　　C.therain

　　D.thewinds

　　（）13.thesizeofwaveisdecidedby（）factors

　　A.two

　　B.three

　　C.four

　　D.five

　　（）14.ifthewindisblowingatfiftykilometersanhour,mostwaveswillbe（）metershigh

　　A.five

　　B.ten

　　C.fifteen

　　D.fifity

　　（）15.whenthelargestwaverosein1933,thewindmustbeblowingat（）anhour

　　A.thirty-fourkilometers

　　B.threehunderdandfortymetres

　　C.threethousandhundredkilometers

　　D.threehundredandfortythousandmetres