  Neutrino nuclear responses associated with medium momentum transfer of
q=20-80 MeV for astro neutrinos and double beta decays were studied by using
charge exchange reactions on Te128 and Te130. Gamow-Teller and spin dipole
nuclear matrix elements are found to be reduced with respect to the pnQRPA
matrix elements by the coefficient of around 0.35. The reduction is discussed
in terms of the quenching of axial vector coupling (g_A).
