单项选择题

The best title for the passage is ______.

A．The Nature of Science and Scientists
B．Biology and the Scientific Age
C．Hypotheses and Theories
D．On Distinguishing Fact from Fiction
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单项选择题
Pure science, leading to the construction of a microscope, ______.
A．may lead to antiscientific, "impure" results
B．necessarily precedes applied science, leading to the discovery of a cell
C．is not always as pure as we suppose
D．necessarily results from applied science and the discovery of a cell
单项选择题
The passage's success lies in its extensive use of ______.
A．parallelism
B．metaphors
C．metonymy
D．similes
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