单项选择题
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A.She can’t help the man out until later.
B.The task will take more time than the man thinks.
C.She complains that the man should have come earlier.
D.She can’t support the man’s argument during his debate.
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单项选择题
The best title for the passage would be ______.
A.Hypotheses and Theories
B.On Distinguishing Fact from Fiction
C.The Nature of Science and Scientists
D.Biology and the Scientific Age
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单项选择题
Pure science, leading to the construction of a microscope, ______.
A.is not always as pure as we suppose
B.may lead to anti-scientific, "impure" results
C.necessarily results from applied science and the discovery of a cell
D.necessarily precedes applied science, leading to the discovery of the cell
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