How does the author evaluate the generalizations of people’s types in Para. 3?
（A）Such generalizations help us judge the different characters of people we meet
（B） Such generalizations are not inclusive enough to draw a convincing conclusion.
（C） Such generalizations prove that nature plays an important role in determining social habits.
（D） Such generalizations show that there are mainly two different types of people on the planet.
参考答案
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