【单选题】
            
 First (reported by) Spanish explorers in 1796, (the asphalt) in California's La Brea Tar Pit was mined (commercial) for (many) years.
A.reported by
B.the asphalt
C.commercial
D.many
        
        
			
            
            
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				根据网考网移动考试中心的统计,该试题:
11%的考友选择了A选项
1%的考友选择了B选项
75%的考友选择了C选项
13%的考友选择了D选项