2017-2018学年高中英语unit5thepowerofnature课时跟踪练（一）warmingup

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1、Unit5Thepowerofnature课时跟踪练（一）WarmingUp&Reading-PrereadingI•阅读理解TheUSgovernmenthasrecentlyhelpedpeoplelearnmoreaboutthedangersofearthquakesbypublishingamap.Thismapshowsthechancesofanearthquakeineachpartofthecountry.Theareasofthemapwhereearthquakesaremostlikelytooc

2、curarecalledearthquakebelts.Thegovernmontisspendingagreatdealofmoneyandisworkinghardtohelptodiscovertheanswerstothesetwoquestions：Canwepredictearthquakes?Canwecontrolearthquakes?Toanswerthefirstquestion,scientistsarelookingverycloselyatthemostactivefault（断层）syste

3、msinthecountry,suchastheSanAndreasfaultinCaIifornia.Afaultisabreakbetweentwosectionsoftheearth，ssurface・Thosebreaksbetweensectionsaretheplaceswhereearthquakesoccur.Scientistslookatthefaultsforcha.ngeswhichmightshowthatanearthquakewasabouttooccur.Butitwillprobably

4、bemanyyearsbeforewecanpredictearthquakescorrectly.Andthecontrolofearthquakesisevenfartheraway.However,therehavebeensomeinterestingdevelopmentsinthefieldofcontrollingearthquakes・ThemostinterestingdevelopmentconcernstheRockyMountainArsenalearthquakes・Herewaterwaspu

5、tintoalayerofrocks4,000metresbelowthesurfaceoftheground・Shortlyafterthisinjection（注身寸）ofwater,therewasasmallnumberofearthquakes.Scientistshavedecidedthatthewaterwhichwasinjectedintotherocksworked1ikeoi1oneachother.Whenthewater"oiled”thefault,thefauItbecameslipper

6、yandtheenergyofanearthquakewasgivenout.Scientistsarestillexperimentingatthesiteoftheseearthquakes.Theyhaverealizedthatthereisaconnectionbetweentheinjectionthewaterandtheearthquakeactivity・Theyhavesuggestedthatitmightbepossibletousethisknowledgetopreventverybig,da

7、ngerousearthquakes,thatis,scientistscouldinjectsomekindoffluidlikewaterintofaultsandchangeonebigearthquakeintoanumberofsma.11,harmlessearthquakes.……寤蕭禰妾「亦了呃薔只ki对龜蔻扁函竟菖碩:荚由跖#亦夭了连厉霞「预亦另嘀祈後X：他们甚至在努力采取措施控制地震的发生。1-Earthquakesbeltsare•A.mapsthatshowwhereearthquakesarel

8、ikelytooccurB.zoneswithahighprobabi1ityofearthquakesC.breaksbetweentwosectionsoftheearth'ssurfaceD.thetwolayersofearthalongafault解析：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