单项选择题

What does "shoddy products" (Line 2,Para. 2) probably mean

A．Piracy products.
B．Shabby products.
C．Expensive products.
D．Unqualified products.
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单项选择题
Why is chess game mentioned in the last paragraph
A．Because game theory is from chess game.
B．Because economists should learn from chess.
C．Because chess has the same principle as economics.
D．Because it's another concept in the field of economics.
单项选择题
Which statement about the relationship between the short-term and long-term profits is true
A．Short-term profits are more important than long-term profits.
B．The aim for long-term profits must influence short-term profits.
C．Both the long-term and short-term profits should be considered.
D．Short-term profits are usually obtained at the cost of long-term profits.
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