______18. Structured slides differ from free-form slides in that the first kind A. follow a basic format based on templates. B. are easy to create. C. rely on more text to relay complex ideas. D. all of the above.

______19. You always close your speech A. on a positive note. B. by leaving the audience with a feeling of incompletion, which you resolve in the question-and-answer period. C. with something dramatic or flamboyant. D. by introducing some new ideas for the audience to think about.

______20. An effective speech is characterized by its use of A. highly formalized organization. B. heightened conversation. C. flamboyant visuals. D. biased information.

______21. When you have covered all the main points in your speech, A. reinforce your theme by repeating and summarizing the three or four main supporting points. B. wrap up as quickly as possible. C. avoid using such phrases as To sum it all up and In conclusion. D. do all of the above.

______22. A question-and-answer period after a speech A. is usually unnecessary.B. is helpful only if the purpose of the speech is to motivate or entertain.C. is one of the most important parts of any presentation.D. is included only for small audiences.