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
According to the passage, which of the following statements is NOT CORRECT
A．American schools have already seen marked improvements in math and science test scores.
B．American schools have yet to adapt their curricula to make the most of computers and the Internet.
C．Teachers need to be formally and adequately trained to cope with the new technology.
D．There is still skepticism about the new technology.
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 stron
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