  We demonstrate that studies of the semiexclusive large angle photon - nucleus
reactions: $\gamma + A\to h_1+h_2 +(A-1)^*$ with tagged photon beams of
energies $6 \div 10$ GeV which can be performed in Hall D at Thomas Jefferson
National Acceleration Facility (TJNAF) would allow to probe several aspects of
the QCD dynamics: establish the $t$-range in which transition from soft to hard
dynamics occurs, compare the strength of the interaction of various mesons and
baryons with nucleons at the energies of few GeV, as well as look for the color
transparency effects.
