Many people may enjoy travelling by air， but few like airline food． Airline have always tried to improve the food quality and the taste in order to attract more travelers．（1） 　　．According to some recent scientific researches， a part of the reason is that at high altitude（海拔），we can't actually taste things well as we do on the ground．

Scientists have found that even before a plane takes off， （2） 　　． As the plane climbs， the air pressure changes and our noses become more and more senseless．When the plane goes 35，000 feet high， （3） 　　．They help explain why the tomato juice on airlines tastes far less sour in the air than it does down on the ground（4） 　　Otherwise， the food would be tasteless．Astronauts also have to do with this problem on their journey for similar reasons． （5） 　 _ 　The studies are going on! We are looking forward to any improvements．

A．the nose no longer knows just like being bitten by a snake． B．How to solve this problem？ C．the air inside the plane dries out the nose． D．Getting something tasty in the air is like a dream to the travelers． E．It also helps to explain why airlines like to have salty and spicy（辛辣的）food better．