精选优质文档-倾情为你奉上专题训练八 饮食、卫生与健康 Passage 1Many people travel to different places in the world by air. Usually it takes a long time, perhaps half a day, for passengers to stay in the plane. So airlines(航空公司) offer passengers food. But it is common that they feel bad about food taste. Do you agree?To solve this problem, airlines try hard to improve their food. They would like to do so because they dont want to lose customers.However, according to scientific research, part of the r
