“路上的汽車為什麽白天還開著車燈？”

來源: 於 2013-06-18 16:14:11 [舊帖] [給我悄悄話] 本文已被閱讀：次
“為了減少交通事故；有數據證明這是有效的”.  What's wrong with this answer? I think this is correct.