单项选择题

Few mathematicians are（）their futures on finding any such proof; instead, their efforts are focused on finding good, but not（）, solutions for most cases, a field of study aptly known as approximation theory.

A．betting ； perfect
B．developing ； convenient
C．pinning ； substandard
D．destroying ；exact
E．establishing ； vague

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单项选择题
She is so（），it is inconceivable how she is generally thought to be（）.

A．percipient ； reasonable
B．philanthropic ；dogmatic
C．importunate ；fortunate
D．inconsistent ； catholic
E．self-aggrandizing ； unassuming
单项选择题
MEANDER:
A．conduct courteously
B．move on purpose
C．administer severely
D．alter eternally
E．be convinced of
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