What is the one huge problem that we haven’t really solved? [br] Which year is t

游客2023-09-15  13

问题 What is the one huge problem that we haven’t really solved? [br] Which year is the fewest in violation of federal smog standards in Los Angeles?

选项 A、1976
B、1979
C、1990
D、2004

答案 D

解析 细节题。根据题干信息词the fewest和Los Angeles定位到第二个小标题第三段末句Between 1976 and 1990,the Los Angeles area averaged some 150 days per year in violation of federal smog standards;in 2004, that figure dropped to just 27 violation days,the fewest ever for that city,即:2004年违背联邦烟雾标准的日子最少,故选D。
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