题目

Dave was a college student. His uncle was very rich, but he had no child of his own. Soon after Dave left college, his uncle died .He left Dave a lot of money , so he decided to set up his own company. He found a nice office , bought some new desks and chairs and moved in. He had only been there for a few hours when he heard someone coming towards his house. “It’s my first customer !” he thought . He quickly picked up the telephone and pretended （假装）to be very busy answering an important call from someone in New York. The caller wanted to buy a big and expensive house in 生活与化学紧密相连，以下叙述中只发生物理变化的是A.冰块融化B.饭菜变馊C.铁锅生锈D.稻草燃烧