厨房里涉及很多物理知识；打开醋瓶闻到醋香，这是______现象；从热水瓶中倒出一大杯热水，立即将瓶塞盖紧，瓶塞会跳起来，这是因为倒出热水后，进入热水瓶的冷空气与热水发生______，受热膨胀对外做功，把瓶塞顶出瓶口．
（1）醋分子不停地做无规则的运动，扩散到空气中，所以人们能闻到醋香，这是扩散现象．
（2）热水瓶的冷空气与热水之间存在温度差，发生热传递，使冷空气的内能增加、温度升高，空气膨胀对瓶塞做功，把瓶塞顶出瓶口．
故答案为：扩散；热传递．
信息匹配(共5小题；每小题2分，满分10分) 阅读下列应用文及相关信息，并按照要求匹配信息。请在答题卡上将对应题号的相应选项字母涂黑。 首先，请阅读下列应用文：
61. Bill travels a lot when he was younger. Now that he has stopped his work, he enjoys reading about foreign people, places and customs even if he has already visited that part of the world. 62. Emi is a university student studying Italian and Politics. She doesn’t have much time to read anything very detailed but she is looking for something with plenty of news and information. 63. Ben serves as an assistant to the general manager of an American company in Los Angeles. He is very interested in management and the use of high technology. 64. Up till now Brigitte has never traveled far so this year she has decided to go abroad for the first time. The travel agent suggests that she should read about various countries first before choosing her holiday. 65. Susan likes shopping. She is interested in buying clothes and she needs to be offered advice on clothes. |