题目

It is reported that thousands of people ______ since a terrible earthquake hit Nepal.A. died                B. have died         C. have been dead         D. will die 答案：C蜡烛总是被赋予美好的寓意，它通过燃烧而发出光亮，在感叹烛光带给我们光明与温暖的同时，你能分清下面的变化和性质吗？A蜡烛的密度比水大；B蜡烛燃烧；C蜡烛不溶于水；D掰断蜡烛．E、蜡烛能燃烧F、蜡烛的质地不硬．请用序号填写： 是物理变化； 是化学变化； 是物理性质； 是化学性质．