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<正> In this paper,we calculate the branching ratios for B~+→D_s~+η,B~+→D_s~+η′,B~+→D_s~(*+)η and B~+→D_s~(*+)η′decays by employing the perturbative QCD (pQCD) factorization approach.Under the two kinds of η-η′ mixingschemes,the quark-flavor mixing s