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We discuss the contributions of the top-Higgs ht0 predicted by topcolor-assisted technicolor (TC2) models to the process e+e- → vvtt.We find that the contributions are very large.For mht = 400 GeV and ε = 0.01,the production cross section of this process can reach 11.2 fb,which may be detected in thc future high energy e+e- collider experiments.The process e+ e- → vvtt can be used to test experimentally the signal of TC2 models.