已知\(\{a_{n}\}\)是等比数列，若\(a_{1}=1\)，\(a_{6}=8a_{3}\)，数列\(\{ \dfrac {1}{a_{n}}\}\)的前\(n\)项和为\(T_{n}\)，则\(T

已知\(\{a_{n}\}\)是等比数列，若\(a_{1}=1\)，\(a_{6}=8a_{3}\)，数列\(\{ \dfrac {1}{a_{n}}\}\)的前\(n\)项和为\(T_{n}\)，则\(T_{5}=(\)　　\()\)

A．\( \dfrac {31}{16}\)

B．\(31\)

C．\( \dfrac {15}{8}\)

D．\(7\)

【考点】等比数列的求和

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难度：较易

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