  The sensitivity of the Sudbury Neutrino Observatory (SNO) to measure the
shape of the recoil electron spectrum in the charged-current reaction of
$^{8}$B solar neutrinos interacting with deuterium can be improved if the
results of a $^{8}$Li beta-decay calibration experiment are included in the
test. We calculate an improvement in sensitivity, under certain idealistic
assumptions, of about a factor of 2, sufficient to resolve different
neutrino-oscillation solutions to the solar-neutrino problem. We further
examine the role of recoil and radiative corrections on both the $^{8}$B
neutrino spectrum and the $^{8}$Li electron spectrum and conclude that the
influence of these effects on the ratio of the two spectra as measured by SNO
is very small.
