  We examine the possibility of high temperature superconductivity from
two-dimensional semiconductor without antiferromagnetic fluctuations. The weak
coupling BCS theory is applied, especially where the Fermi level is near the
bottom of the conduction band. Due to screening, the attractive interaction is
local in k-space. The density of states(DOS) does not have a peak near the
bottom of the band, but k-dependent contribution to DOS has a diverging peak at
the bottom. These features lead to high temperature superconductivity which may
explain the possible superconductivity of WO_3.
