2018学年高中英语 Unit 5 The power of nature课时跟踪练（一）Warming Up & Reading-Pre reading 新人教版-选修6

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1、-Unit5Thepowerofnature课时跟踪练（一）WarmingUp&Reading-PrereadingⅠ.阅读理解ATheUSgovernmenthasrecentlyhelpedpeoplelearnmoreaboutthedangersofearthquakesbypublishingamap.Thismapshowsthechancesofanearthquakeineachpartofthecountry.Theareasofthemapwhereearthquakesaremostlikelytooccurarecalledearthquakebelts.Theg

2、overnmentisspendingagreatdealofmoneyandisworkinghardtohelptodiscovertheanswerstothesetwoquestions：Canwepredictearthquakes?Canwecontrolearthquakes?Toanswerthefirstquestion,scientistsarelookingverycloselyatthemostactivefault(断层)systemsinthecountry,suchastheSanAndreasfaultinCalifornia.Afaultisabreak

3、betweentwosectionsoftheearth'ssurface.Thesebreaksbetweensectionsaretheplaceswhereearthquakesoccur.Scientistslookatthefaultsforchangeswhichmightshowthatanearthquakewasabouttooccur.Butitwillprobablybemanyyearsbeforewecanpredictearthquakescorrectly.Andthecontrolofearthquakesisevenfartheraway.However

4、,therehavebeensomeinterestingdevelopmentsinthefieldofcontrollingearthquakes.ThemostinterestingdevelopmentconcernstheRockyMountainArsenalearthquakes.Herewaterwasputintoalayerofrocks4,000metresbelowthesurfaceoftheground.Shortlyafterthisinjection(注射)ofwater,therewasasmallnumberofearthquakes.Scientis

5、tshavedecidedthatthewaterwhichwasinjectedintotherocksworkedlikeoiloneachother.Whenthewater“oiled”thefault,thefaultbecameslipperyandtheenergyofanearthquakewasgivenout.Scientistsarestillexperimentingatthesiteoftheseearthquakes.Theyhaverealizedthatthereisaconnectionbetweentheinjectionofthewaterandth

6、eearthquakeactivity.Theyhavesuggestedthatitmightbepossibletousethisknowledgetopreventverybig,dangerousearthquakes,thatis,scientistscouldinjectsomekindoffluidlikewaterintofaultsandchangeonebigearthquakeintoanumberofsmall,harmlessearthquakes.7-语篇解读：为了提高人们对地震的防范意识，美国政府加大了在防震、预测方面的投入，他们甚至在努力采取措施控制地震的

7、发生。1．Earthquakesbeltsare________.A．mapsthatshowwhereearthquakesarelikelytooccurB．zoneswithahighprobabilityofearthquakesC．breaksbetweentwosectionsoftheearth'ssurfaceD．thetwolayersofearthalongafault解析：选B　细节理解题。根据第一段的第三句可