【阅读理解Anearthquakehappenswhentw-查字典问答网
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  【阅读理解Anearthquakehappenswhentwoplatesrub(碰撞)together.Theearthplatestravelindifferentdirectionsandatdifferentspeeds.Ifoneplateisslowlyforcedunderneaththeotherpr】

  阅读理解

  Anearthquakehappenswhentwoplatesrub(碰撞)together.Theearthplatestravelindifferentdirectionsandatdifferentspeeds.Ifoneplateisslowlyforcedunderneaththeotherpressurebuildsupuntiltheplatesbreakapart.Thisprocesscausesthegroundtomove.Itisanearthquake.Inotherwordsearth-quakesaretheshakingoftheearth’ssurfacecausedbytheearth’srockyouterlayerasaresultoftheenergystoredwithintheearth.Thestrainwithintherocksissuddenlyreleased(释放).

  Thedamageanearthquakecausesdependsonwhereitisandthetimeitishappening.Ifanunpopulatedregionisstrucktherewillbelowlossoflifeorproperty.Ifithitsalargecitytheremaybemanyinjuriesandmuchdestruction.Manyoftheareasatriskarelargelypopulatednow.Majorearthquakeshittingthoseareastodaycouldproduceterribledamage.

  Actuallythereareseveralmillionsmallearth-quakeseveryyear.Largeearthquakessuchasthe1964Alaskanquakethatmeasured9.2ontheRichterscalecausemillionsofdollarsindamage.Inthelast500yearsmillionsofpeoplehavebeenkilledbyearthquakesaroundtheworld-including240000inthe1976TangShanearthquakeinChina.

  A60-secondorlessearthquakecancausedevastationthatcontinuesforyearsafterthefirsttremor(小震).In1972aseriesofsevereearthquakesstruckManaguaNicaragua.Fifteenyearslaterthecitystilllookedthewayithadaweekaftertheearthquakehitbecausethecountrydidnothavethenecessarymoneytorebuildit.

  Theshakingoftheearthissometimesnotthegreatestdisaster.Itisintheensuingfiresandfloodsthatoftenthegreatestdamageoccurs.Inthe1906earthquakeitwasthefirescausedafteritthatdidthemajorityofthedamage.Anearthquakecanalsodestroydamshighaboveacityorvalleyscausingfloodstosweepdownandsweepawayeverythingintheirpath.

  (1)

  Whichofthefollowingisthemainideaofthefirstparagraph?

1回答
2020-05-24 16:14
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韩红芳

  答案:1.B;2.B;3.D;4.B;

2020-05-24 16:17:02

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