6. T F One major purpose of a speech of introduction is to build enthusiasm for the upcoming speaker. 7. T F As your textbook explains, speeches of introduction usually should be two to three minutes long. 8. T F One major purpose of a speech of introduction is to build enthusiasm for the main speaker. 9. T F As your textbook explains, speeches of introduction usually should be 8 to 10 minutes long. 10. T F When giving a speech of introduction, you should be sure to praise the speaking skills of the main speaker. Â