  We give an explicit formula for the difference between the standard and
reduced genus-one Gromov-Witten invariants. Combined with previous work on
geometric properties of the latter, this paper makes it possible to compute the
standard genus-one GW-invariants of complete intersections. In particular, we
obtain a closed formula for the genus-one GW-invariants of a Calabi-Yau
projective hypersurface and verify a recent mirror symmetry prediction for a
sextic fourfold as a special case.
