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TheU.S.governmenthasrecentlyhelpedpeoplelearnmoreaboutthedangersofearthquakesbypublishingamap.Thismapshowsthechancesofanearthquakeineachpartofthecountr y.Theareasofthemapwheregovernmentisspendingagreatd ealofmoneyandisworkinghardtohelpdiscovertheanswertothesetwoquestions:
1.Canwepredictearthquakes?
2.Canwecontr olearthquakes?
Toanswerthefirstquestion,scientistsarelookingverycloselyatthemostactivefaultsystemsinthecountr y,suchastheSanAndreasfaultinCalifornia.Afaultisabreakbetweentwosectionsoftheearth'ssurface.Thesebreaksbetweensectionsaretheplaceswhereearthquakesoccur.
Scientistslookatthefaultsforchangeswhichmightshowthatanearthquakewasabouttooccur.Butitwillprobablybemanyyearsbeforewecanpredictearthquakesaccuratelyandthecontr olofearthquakesisevenfartheraway.
Nevertheless,therehavebeensomeinterestingdevelopmentsinthefieldofcontr ollingearthquakes.ThemostinterestingdevelopmentconcernstheRockyMountainArsenalearthquakes.Herewaterwaspatintoalayerofrocks4,000metr esbelowthesurfaceoftheground.Shortlyafterthisinjectionofwater,therewasasmallnumberofearthquakes.Scientistshavedecidedthatthewaterwhichwasinjectedintotherocksworkedlikeoiloneachother.Whenthewater"oiled"thefault,thefaultbecameslipperyandtheenergyofanearthquakewasreleased.
Scientistsarestillexperimentingatthesiteoftheseearthquakes.Theyhaverealizedthatthereisaconnectionbetweentheinjectionofthewaterandtheearthquakeactivity.Theyhavesuggestedthatitmightbepossibletousethisknowledgetopreventverybig,destr uctiveearthquakes,thatis,scientistsCouldinjectsomekindoffluidlikewaterintofaultsandchangeonebigearthquakeintoanumberofsmall,harmlessearthquakes.
36.Earthquakebeltsare______.
A)mapsthatshowwhereearthquakesarelikelytooccur
B)zoneswithahighprobabilityofearthquakes
C)breaksbetweentwosectionsoftheearth'ssurface
D)thetwolayersofearthalongafault
正确答案：B答案：B
[试题分析]常识题。
[详细解答]解答本题我们显然可以通过所知的地理知识就可判断，当然B为正确答案。
