听一段材料，回答下面几个小题。
What would Americans do if you keep silent for a long time?
A. They would do their best to include you in the conversation.
B. They would stop the conversation.
C. They would be very angry.
Would Americans argue with you if they disagree with you?
A. Yes, they may.
B. No. They may remain quiet.
C. We don't know.
Which of the following is TRUE according to the passage?
A. Americans like to stand close to one another in a conversation.
B. Americans regard making gestures in a conversation as being impolite.
C. It is right for Americans to pat a child's head to show their love for the child.