Every country has its own culture. Even though each country uses doors, doors may have 50 functions and purposes which lead to 51 differences. When I first came to America, I noticed that a public building had two different 52 and they had distinct 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 53 the building. This was new to me, because we use the 54 door in South Korea. For quite a few times I failed to go out of a shopping centre and was embarrassed. The way of using school bus doors was also 55 to me. I used to take the school bus to school. The school decided that when the driver opened both the front and back door. Students who were getting off the bus should get off first, and students who were getting on should get on 56 in South Korea. We do not need to wait for people to 57 . One morning I hurried to the bus, and when the bus doors opened, I 58 tried to get on the school bus through the front door. All the students around looked at me. I was totally 59 , and my face went red. 小题1: A．different B．important C．practical D．unusual 小题2: A．national B．embarrassing C．amazing D．cultural 小题3: A．exits B．entrances C．signs D．doors 小题4: A．enter B．leave C．open D．close 小题5: A．main B．same C．front D．back 小题6: A．annoying B．hard C．satisfying D．strange 小题7: A．sooner B．later C．faster D．earlier 小题8: A．get on B．get off C．get up D．get up 小题9: A．politely B．patiently C．unconsciously D．slowly 小题10: A．embarrassed B．annoyed C．unsatisfied D．excited