$1-$Which of the following was a historical antecedent of current speech generation systems?

Select one:

A$.$ Kratzenstein machine

b$.$ W$.$ Von Kempelen Machine

c$.$ Faber machine

d$.$ All of the above are correct

$2-$Which of the following data confirmation strategies is more efficient, by generating fewer turns in thedialogue?

Select one:

a$.$ ask again

b$.$ Explicit

c$.$ Implicit

d$.$ All of the above are equally efficient