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