earthquakethereisoftenagreatnoisefirst.Thentheearth 3 terribly;manyhouses 4 down.Railway
tracksbreakandtrainsgo 5 lines;agreatmanyfactoriesare 6 ;thousandsofdeathsarecausedand
manymorelosehomes... 7 thegreatdamageanddeathscausedbytheearthquake 8 otherdisasters
suchasfiresoften 9 .Morebuildingsaredestroyedandmore 10 arecaused.
Itiswellknownofthe 11 ofapossibleearthquakeandforcenturiesmanhasbeenmakingresearches
onearthquakes.Morethan2000yearsago 12 aChinesescientistnamedZhangHeng 13 amachine
whichcouldfindoutfromwhich 14 theseismic(地震的)waveshadcomeandthismachineisstill 15
byscientiststoday.Nowweknowmuchmoreaboutearthquakesand 16 theyhappenbutwestillcannot
17 exactlywhenandwhereanearthquakewillhappenandcannot 18 itfromhappening.Soearthquakes
areamongthe 19 disastersintheworld.
Noonecanstopnaturalearthquakes. 20scientistscanhelpstopearthquakesfromdestroyingwhole
citiesandcausingtoomanydeaths.
( )2.A.real
( )3.A.moves
( )4.A.get
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