— Is Tom in the next room? — Well, it’s hard to say. But I heard him _______ loudly when I passed by just now. A. speak B. to speak C. speaking 答案:C、(4分)小明在家探究鸡蛋受到的浮力大小与哪些因素有关,如图所示。请仔细观察图示并回答下列问题:(1)从A、B两图可知,鸡蛋在水中受到的浮力大小是_ __N。(2)根据B、C两实验,他就得出鸡蛋受到的浮力大小与液体的密度有关,你认为对吗?________,理由是______ __。(3)在图实验中,你还可以观察到什么现象?(写出一个) 。