TheSanAndreasfaultis______.
A)anactivefaultsystem
B)aplacewhereearthquakeshavebeenpredictedaccurately
C)aplacewhereearthquakeshavebeencontr olled
D)thelocationoftheRockyMountain
正确答案：A答案：A
[试题分析]细节题。
[详细解答]根据第四段第一句Toanswerthefirstquestion，scientistsarelookingverycloselyatthemostactivefaultsystemsinthecountr y，suchastheSanAndreasfaultinCalifornia．的表述，不难判断A为正确答案。
