2018-2019学年高中英语三维设计人教版浙江专版选修6：unit5课时跟踪练一

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1、课时跟踪练（—）WarmingUp&Reading—PrereadingI读理解ATheUSgovernmenthasrecentlyhelpedpeoplelearnmoreaboutthedangersofearthquakesbypublishingamap.Thismapshowsthechancesofanearthquakeineachpartofthecountry・Theareasofthemapwhereearthquakesaremostlikelytooccurarecalledearthquakebelts・T

2、hegovernmentisspendingagreatdealofmoneyandisworkinghardtohelptodiscovertheanswerstothesetwoquestions：Canwepredictearthquakes?Canwecontrolearthquakes?Toanswerthefirstquestion,scientistsarelookingverycloselyatthemostactivefault（断层）systemsinthecountry,suchastheSanAndreasfa

3、ultinCalifornia.Afaultisabreakbetweentwosectionsoftheearthssurface.Thesebreaksbetweensectionsaretheplaceswhereearthquakesoccu匚Scientistslookatthefaultstorchangeswhichmightshowthatanearthquakewasabouttooccur.Butitwillprobablybemanyyearsbeforewecanpredictearthquakescorrec

4、tly・Andthecontrolofearthquakesisevenfartheraway.However,therehavebeensomeinterestingdevelopmentsinthefieldofcontrollingearthquakes・ThemostinterestingdevelopmentconcernstheRockyMountainArsenalearthquakes.Herewaterwasputintoalayerofrocks4,000metresbelowthesurfaceofthegrou

5、nd・Shortlyafterthisinjection（注射）ofwater,therewasasmallnumberofearthquakes.Scientistshavedecidedthatthewaterwhichwasinjectedintotherocksworkedlikeoiloneachother.Whenthewater"oilecTthefault,thefaultbecameslipperyandtheenergyofanearthquakewasgivenout.Scientistsarestillexpe

6、rimentingatthesiteoftheseearthquakes.Theyhaverealizedthatthereisaconnectionbetweentheinjectionofthewaterandtheearthquakeactivity・Theyhavesuggestedthatitmightbepossibletousethisknowledgetopreventverybig,dangerousearthquakes,thatis,scientistscouldinjectsomekindoffluidlike

7、waterintofaultsandchangeonebigearthquakeintoanumberofsmall,harmlessearthquakes.错误！1•Earthquakesbeltsare.A.mapsthatshowwhereearthquakesarelikelytooccurB•zoneswithahighprobabilityofearthquakesC・breaksbetweentwosectionsoftheearthJssurfaceD・thetwolayersofearthalongafault解析：

8、选B细节理解题。根据第一段的第三句可知，地震多发地带被称为earthquakebeltso2.TheSanAndreasfaultis•A.anactivefaultsystemBeaplacewhereearthqua