You may also want to refer to this section as you practice branching Conversations with onscreen characters. Use this section to review the dialogues and to practice your reading skills. Story and Action contains the dialogues from all the lessons in the Comprehensive Courses. Use this section to review and practice common phrases. The text is organized into eight major sections which have been marked by tabs to facilitate access:īasic Expressions contains all the expressions introduced in the Basics Course of the program. The Learn to Speak program will be your principal tool for gaining listening comprehension and conversation skills, but this text can serve as a handy reference tool for vocabulary and grammar questions, as an aid during your conversations with the onscreen characters, and as a workbook for reviewing and practicing grammar.
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There was no significant effect on auditory threshold at a range of frequencies. Breathing end-tidal 10% and 20% N2O significantly increased middle ear pressure, and produced a significant effect on the subjective interpretation of a sound's intensity. Observations were made in the breathing mediums of room air in the control stages (Stages 1 and 4), compared to N2O and supplemental oxygen (Stages 2 and 3), in 16 human subjects in a quiet room. Subjects also qualitatively interpreted three intensity levels using a subjective intensity test. This study examined auditory threshold levels, acoustic impedance, acoustic perception, memory, and discrimination to determine if hearing was altered by end-tidal 10% or 20% nitrous oxide. This increase can be interpreted as hearing low intensity sounds more loudly. There is a belief that the administration of nitrous oxide (N2O) increases hearing acuity. |
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