52．What would be the best title for the test? 　　(A)Cultural Differences (B)Smiles and Relationship 　　(C)Facial Expressiveness (D)Habits and Emotions

51．What should we do before attempting to “read” people? 　　(A)Learn about their relations with others. 　　(B)Understand their cultural backgrounds. 　　(C)Find out about their past experience. 　　(D)Figure out what they will do next.