单项选择题

The author regards the practice of using drugs for medically valid purposes before FDA approval as ______.

A．an illegal activity
B．a dangerous policy
C．a necessary compromise
D．a short-term phenomenon
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单项选择题
Which of the following best expresses the author's main concern
A．Photography as a fine art.
B．Modernism and Expressionism.
C．Photographers' attitude toward art.
D．Methods of modern photographers.
单项选择题
The author uses Abstract Expressionist painter as an example to show that ______.
A．it is difficult to define real art
B．what photographers do differs from that of painters
C．Abstract Expressionist painters and photographers are different
D．they resemble serious photographers in giving up traditional aims of art
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