[简答题]

In your university work, you will be expected to give oral presentations in the form of re- ports or simply in the form of answers to questions. There are several things you can do to make your oral presentations clear and easy to understand. The Cumdamental point to realize is that speech and writing are different. If you want to be best understood, you can’t simply read your written report aloud. The biggest difference between spoken and written language is that readers can look back over the printed words when they don’t understand. In spoken language, however, listeners can’t go back and check the words. They can rely only on memory. So the first principle to keep in mind when you’re planning to speak in public is that you have to help the listener’s memory. This means that an oral report can’t deliver information as rapidly as a written report. That is, you can’t have as many pieces of new information packed into the same number of w