专题训练八 饮食、卫生与健康-2021中考阅读理解专题训练

专题训练八 饮食、卫生与健康 Passage 1 Many 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 don't want to lose customers. However, according to scientific research, part of the reason why plane food tastes bad is that at high altitude(海拔) we can not taste things as well as we do on the ground. Also scientists have found that our noses become very dry even before a plane takes off. As the plane moves up, the change in air pressure(气压) reduces one third of the sensibility(感觉) of our taste buds(味蕾). So our taste buds become senseless. The sad fact, however, is that our noses don't know it. All of these help explain why food on the plane tastes so bad. They also help explain why airlines choose to