阅读理解ApowerfulearthquakestruckthenortheasterncoastofJapanattwoforty-sixp.m.localtimeonMarcheleventh．2011．Japan'sMeteorologicalAgencyreleaseditsfirsttsunami(海啸)

　　阅读理解

　　ApowerfulearthquakestruckthenortheasterncoastofJapanattwoforty-sixp.m.localtimeonMarcheleventh．2011．Japan'sMeteorologicalAgencyreleaseditsfirsttsunami(海啸)warningsjustthreeminuteslater．Thecountryhasoneofthebestearthquakeearlywarningsystemsintheworld．

　　TherearemorethanfourthousandSeismicIntensityMetersinplacethroughoutJapantomeasureearthquakeactivity．Thesemetersprovideinformationwithintwominutesofanearthquakehappening．Informationaboutthestrengthandthecenteroftheearthquakecanbelearnedwithinthreeminutes．

　　Therearealsoconcrete(混凝土)seawallsaroundmuchoftheJapanesecoastline．Butthesemeasuresprovednomatchforthepowerfulearthquakeandtsunami．

　　CostasSynolakisatsunamiexpertattheUniversityofSouthernCaliforniainLosAngelessaid“Japanisoneofthosemostwell-preparedcountriesonearthintermsoftsunamiwarning．Theyhadawarning．Ithinkwhatwentwrongisthattheyhadnotexpectedthesizeofthisevent．”

　　Hesaystherearetworeasonsforthis．Japanhasnothadanyeventanywherenearasbigasthisoneinthelastonehundredfiftyyears．AndscientistshadnotexpectedsuchalargeearthquakehappeningoffthecoastofJapan．

　　Theninepointzeromagnitudeearthquakewasthefourthmostpowerfulearthquakeeverrecordedworldwide．ItwasalsotheworstearthquakeevertohitJapan．Thetsunamiwavesthatfollowedwerereportedtohavereachedashighasthirteenmetersinsomeareas．

　　CostasSynolakissaysJapan'sconcreteseawallswerenotbuilttohandlesuchhighwaves．

　　Expertssayearlywarningsystemswillcontinuetobelimitedbythesefactsuntilearthquakesandtsunamiscanbepredicted．

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　　Wherecanthispassageprobablybeadaptedfrom?

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　　B．

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