单项选择题

According to the author, how is the approach of 'physicists to solving scientific problems

A．Practical for scientific purposes.
B．Detrimental to scientific progress.
C．Unimportant in most situations.
D．Expedient, but of little long-term valu
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单项选择题
The author implies that scientists develop a healthy skepticism because they are aware that ______.
A．mathematicians are better able to solve problems than scientists
B．changes in axiomatic propositions will inevitably undermine scientific arguments
C．well-defined situations are necessary for the design of reliable experiments
D．some factors in most situations must remain unknown
单项选择题
Assumptions are important for critical readers because they can help readers to ______.
A．grasp the topic exactly
B．understand the argument passage exactly
C．evaluate the argument passage
D．compare the argument passage with similar argument passages
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