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Resonances at Infinite Volume with Effective Field Theory，Bound States at Finite Volume with Matrix Hamiltonian Model，Numerical Results and Discussions for N(1535)，Results and Discussions for N(1440)。For example, some resonances are supposed to be moleculesof other two "stable" particles.The interaction should be attractive between the two stableparticles.Spectrum can be obtained by the interactions at quark levelDistributions of quarks in states can be studied.It is discretization of QCD on the lattice.It is model independent.