单项选择题

Ask Dr. Math could be described as the following EXCEPT ______.

A．a question and answer service
B．a technology training program
C．with a database of questions and answers
D．supported by volunteer math teachers
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单项选择题
What does the author say about the North American market
A．The American buyers of pictures have not changed their taste.
B．The middle market remains strong.
C．The Americans buy art as a speculation.
D．It is experiencing a major recession.
单项选择题
Which of the following does NOT account for the current boom in the art market
A．The American dollar has become weaker against some major currencies.
B．The very rich wish to put part of their investment in art.
C．The very rich have regained their confidence.
D．Dealers buying is growing strong.
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