The weather in Kunming is ______ too cold _____ too hot. People like to live there.
A:either; or
B:both; and
C:neither; nor
D:not only; but also
如图,已知在 RtΔΑΒC 中, ∠C=90∘ , ΑC=ΒC , ΑΒ=6 ,点 Ρ 是 RtΔΑΒC 的重心,则点 Ρ 到 ΑΒ 所在直线的距离等于( )