10. An apparatus as in claim 9 wherein: said matching means include means for receiving tokens, that is, acoustic descriptions, of each of a succession of said utterances said matching means scores against word models; said apparatus further includes means for responding to a score of an utterance against the currently expected word by incorporating information from the token of that utterance into an acoustic model of speech sounds contained in that expected word, which acoustic models are of a type that can be used in the speech recognition system which the apparatus is instructing the user to operate.
9. An apparatus as in claim 2 wherein: said means for specifying a set of one or more allowed response words includes means for specifying a word as an expected word for each of certain of said states; and said means for presenting the user with recognition exercises includes scripting means for explicitly indicating that the user is to say the word which is currently the expected word.