According to the passage, the Southern California oil fields were initially exploited due to _______.
A.the fuel requirements of Los Angeles' rail system
B.an increase in the use of gasoline engines in North America
C.a desire to put unproductive desert land to good use
D.innovative planning on the part of the city founders
A.the fuel requirements of Los Angeles' rail system
B.an increase in the use of gasoline engines in North America
C.a desire to put unproductive desert land to good use
D.innovative planning on the part of the city founders
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Hóa Học lớp 12
