单项选择题

From the Arabic 'words for' camel; and the Eskimo words for 'snow', we can infer that ________.

A．language may reflect living conditions
B．different languages may have the same origin
C．people enjoy different things in different cultures
D．language can be used to show people's versatility
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单项选择题
In the passage, the author thinks economics is ________.
A．a theory focusing on short-term maximization of resources alone
B．a combination of the short-term and long-term profits based on game theory
C．a science concerned with the short-term profits, ignoring its long-term development
D．a field operated entirely by game theory for its balance between the short-term and long-term profits
单项选择题
According to the passage, game theory ________.
A．means regarding economics as an easy game
B．is used to examine the breadth of short-term profits
C．can lead to advisable decision in applied economic situations
D．is a method for predicting the possibility of long-term profits
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