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阅读理解Aterrifyingexampleofthesea'spowersawabout200000peoplediein12differentcountrieslastweek.Thedevastation(毁坏)wascausedwhenamassiveearthquakesenttsunamis(海啸)smashingintoIndianOcean
更新时间:2024-04-27 13:34:39
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Aterrifyingexampleofthesea'spowersawabout200000peoplediein12differentcountrieslastweek.Thedevastation(毁坏)wascausedwhenamassiveearthquakesenttsunamis(海啸)smashingintoIndianOceancoastlines.

CommunitiesinSriLanka.IndonesiaThailandIndiaMalaysiaandEastAfricahavebeendestroyedbythemonsterwaves.Wholetownswereimplysweptasidebythepowerofthewater.Carstrainsandbuildingscouldnotsurvive(幸免)letalonethepeoplewhostoodintheway.

Theearthquakemeasured9.0ontheRichterscale(里氏震级)andoccurredoffthecoastofIndonesia.Itwasrecordedasthefifthstrongestsince1900.

ScientistssaidthequakewasaspowerfulasamillionoftheatomicbombsthatweredroppedonJapanduringWorldWarⅡ.“Thismaybetheworstnaturaldisasterinrecenthistorybecauseitisaffectingsomanyheavilypopulatedcoastalareas"saidJanEgelandaUNofficial.

BecausesuchwavesrarelyhappenintheIndianOceanthereisnosysteminplacetowarncoastalcommunitiestheyareabouttobehit.

TsunamiisJapanesefor“harbourwave.”TheyareusuallycausedbyasuddenriseorfallofpartoftheEarth'scrust(地壳)undertheocean.TsunamisoftenhappeninoceansandtheyaremostcommoninthePacific.Normallyatsunamisincludesaseriesofwaves.

Tsunamiscanbeverylong-asmucha100kilometres-andbeasfarasonehourapart.Theyareabletocrossentireoceanswithoutlosingmuchenergy.OneofthemoststrikingfactsabouttsunamisisthatanearthquakeononesideofthePacificOceancancausegiantwaveanddestructionontheotherside.

Whentheoceanisdeeptsunamiscantravelunnoticedatspeedsofupto800kilometresperhour.Theycancrosstheentireoceaninadayorless.

Thewavemayonlybeafewmetreshighintheoceanbutwhenitisneartheshoreandreachesshallow(浅)waterthewavebuildsupveryquicklyinheight.Witnesses(目击者)insomeareasofIndonesiareportedseeingupto10-metrehighwavescrashintotheshore.

1.WecaninferfromthepassagethatfewerpeoplewouldhavediedintheSouthAsiantsunami________.

[]

A.iftherehadbeenwarningsystemalongthecoast

B.iftheearthquakehadhappenedoffthecoastofThailand

孙红光回答:
  答案:A;C;B;C   解析:
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