英语练习1
题目内容

Few mathematicians are__their futures on finding any such proof; instead,their efforts are focused on finding good, but not__, solutions for most cases, afield of study aptly known as approximation theory.(  )。

2021-11-23

A.betting …perfect

B.developing …convenient

C.pinning …substandard

D.destroying …exact

E.establishing …vague

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