Where a proceeding will be expedited and the interests of the parties will not be substantially prejudiced, evidence may be received in written form. The prepared testimony of a witness upon direct examination, either in narrative or question-and-answer form, may be incorporated into the record as if read or received as an exhibit. A witness upon direct examination shall be sworn and shall identify the prepared testimony as a true and accurate reflection of what the testimony would be if given orally. The witness shall be subject to cross-examination and the prepared testimony shall be subject to a motion to strike either in whole or in part.