??? Even though each country uses doors. .Doors many have?? 21?
functions and purposes which lead to?22?
??? When I first came to America, I noticed that a public building had two different?23?? and they had distiFnct functions. You have to push the door with the word “PUSH” to go out of the building and to pull the door with the word “PULL” to?24?
the building. This was new to me, because we use the ??25?
door in south Korea. For quite a few times I failed to go out of a shopping centre and was embarrassed.，大小：726 KB