单项选择题

It can be inferred from the text that

A．certain areas in pure research are not fully explored.
B．applied investigation requires greater scientific ability.
C．applied research is inferior to pure research.
D．knowledge is useless unless it is put into practice.

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单项选择题Some people look down on applied research because they think that

A．it is a kind of prearranged investigation.
B．no new knowledge can arise from applied research.
C．it is more difficult to get results in applied research.
D．no specific scientific ability is needed in applied research.

单项选择题Which of the following most accurately describe the pattern of the text

A．The author first refutes the classification of research and then criticizes the intellectual snobbery and tendency to look down on the one of the two.
B．The author first refutes the classification of research into the pure and the applied and then presents his own classification.
C．The author first refutes the classification of research and then points out that the classification results from two false ideas.
D．The author first points out the practical importance of applied research and then criticizes those who look down on applied research.