下列运算正确的是(    )

A：${\text{a}}^3·{\text{a}}^3=2{\text{a}}^3$

B：${\text{a}}^0÷{\text{a}}^3={\text{a}}^{-3}$

C：${\left({\text{ab}}^2\right)}^3={\text{ab}}^6$

D：${\left({\text{a}}^3\right)}^2={\text{a}}^5$