题目

一辆卡车在起动，刹车时排出黑烟，由此可推断这辆车所用的燃料是(    ) A.汽油               B.柴油              C.酒精              D.液化石油气 答案：解析：由黑烟可知燃料的含碳量很高答案：BThe fridge doesn’t work, Why not consider a new one?A. buy B. bought C. to buy D. Buying