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We have investigated the electronic states of C70 monolayer on the surface of Ag(111) (1 ML C70/Ag(111)) with synchrotron radiation photoelectron spectroscopy and soft X-ray absorption spectroscopy techniques.The experimental data exhibit metallic property and at least 2.6 e- charge transfer per C70 molecule.The screening effect of Ag(111) on the electronic structure of C70 is remarkable,which greatly reduces or even eliminates the on-site Hubbard energy.