local d_2 = {}
function d_2.读件(o1, o2)
  local k1
  local k1_3
  k1_3 = io.open(o1, o2 or "r")
  k1 = k1_3:read("a")
  k1_3:flush()
  k1_3:close()
  return k1
  end
return d_2
