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 suggests that a mathematician asked to solve a problem in an ill-defined situation would first at-tempt to ______.
A．identify an analogous situation
B．simplify and define the situation
C．vary the underlying assumptions of a description of the situation
D．determine what use would be made of the solution provided
单项选择题
What can we infer from the passage
A．A good writer should clearly state all his assumptions.
B．Once we find assumptions, we will find the writer's problems.
C．We need not clearly express our assumptions in oral communication.
D．Major assumptions are important for both the writer and the reader.
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