单项选择题

It can be inferred from the passage that ______.

A．pure research and applied research are equally difficult
B．applied investigation requires greater scientific ability
C．applied research is not inferior to pure research
D．in both pure research any applied research any scientific knowledge is worth seeking

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单项选择题

In applied investigation, ______.

A．research workers are allowed to follow unexpected, interesting clues
B．scientists make a discovery first, and then try to use it
C．it is the man who is given support
D．results of practical value are to be achieved

单项选择题

Which of the following most accurately describes the pattern of the passage

A．The author first refutes the classification of research into the pure and the applied and then analyze the reasons for 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 into the pure and the applied 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 researc