受疫情影响，不少网友的假期都增加了不少，宅在家无聊?可以复习成考吧!为便捷考生复习，云南成人高考网记者整理了2020年云南成考高起本《英语》模拟考试1

Every human being, no matter what he is doing, gives off body heat. The usual problem is how to dispose of it. But the designers of the Johnstown campus of the University of Pittsburgh set themselves the opposite problem how to collect body heat. They have designed a collection system which utilizes not only body heat, but the heat given off by such objects as light bubs and refrigerators as well. The system works so well that no conventional fuel is needed to make the campuss six buildings comfortable.

Some parts of most modern buildings theaters and offices as well as classrooms are more than amply heated by people and lights and sometimes must be air-conditioned even in winter. The technique of saving heat and redistributing it is called heat recovery. A few modern

buildings recover heat, but the Universitys system is the first to recover heat from some buildings and re-use it in others.

Along the way, pit has learned a great deal about some of its heat producers. The harder a student studies, the more heat his body gives off.