[ B ] It is used to show that one is enthusiastic and hospitable.

　　[ C ] It is used to create a more friendly atmosphere and to avoid embarrassment.

　　[ D ] It is used by people to protect others in the threatening situation.

　　55. According to the author, at a big party, small talk is used with the purpose of_______.

　　[ A ] making both others and yourself feel at ease

　　[ B ] excluding those you don't like from joining you

　　[ C ] keeping your voice low so only your friends can hear you

　　[ D ] comforting those who feel lonely