Read the following paragraph, and 1. Find out the topic sentence; Whether you do or not open a gift in the presence of the giver; whether you should or should not turn the plate over to look at the maker’s symbol on the back; whether you put your coat on before or after you leave the host’s house; whether you eat as quietly or as noisily as possible; whether you carry on a conversation during a meal; whether you walk in front of or behind a seated person; whether it is a friendly or an offensive gesture to put your hand on the arm of the person with whom you are talking ---these and a thousand other questions are matters of cultural definition. None of them is inherently right or wrong, and none is good or bad manners except as a society defines it so.