  We report a study of top-quark reconstruction in $e^+e^- \rightarrow
t\bar{t}$ events at a 500 GeV linear collider using the LCD Fast simulator. The
initial study of top-quark anomalous couplings is also reported. The final
states of 4 jets and lepton as well as 6 jets are used. Using the 4 jets and
lepton final state, we estimate the preliminary sensitivities for form factors
at the $\gamma/Z^0 t\bar{t}$ vertex. In the 6 jets reconstruction, we show
abilities of the top-quark charge identification and the $c$-quark tagging in W
decays.

High Energy Physics - Experiment