我国“辽宁号”航母甲板上涂有耐高温、耐磨抗冲击,能很好保护金属的碳化硅(SiC)涂层,耐温达到2800C,高温防腐性能也很好。关于碳化硅的说法正确的是o A.属于原子晶体 B.属于分子晶体 C.含有非极性共价键 D.易溶于有机溶剂 答案:A--Are you getting a new car this year?--You must be joking! I can’t afford to pay my bills, ________ buy a new car.A.let aloneB.or ratherC.leave aloneD.other than