The best title for the text is_.A. Researches on Genetic Science B. Factors to Affect HappinessC. Reasons for National Differences D. The Happiest Countries第二节（共5小题;每小题2分，满分10分）根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。Students in British schools learn from an early age to give presentations as part of their regular classroom activities. Children as young as five years old often give brief talks about objects they bring in to school—called “show and tell. ”________Even so, a great many native English-speaking adults are afraid to speak or give presentations in front of a large group. A study shows that speaking in front of a crowd is considered the number one fear of the average person, while the second most common fear is death.Needless to say, speaking English in public meetings is necessary for many students and employees. The best way to improve is to practice public speaking. Learners need to receive feedback (反馈）about what they are doing well and about their mistakes.________One group that gives members the chance to practice is Toastmasters, an international organization that holds weekly meetings at which members each give a speech and give others advice about their speeches and speaking style in a friendly environment.Charles LeBeau, the author of Speaking of Speech，is a professor and public speaking consultant in Toastmasters. Speaking of Speech tells about some methods of public speaking for non-native speakers.________________In the book，to help them understand presentation skills, Mr. LeBeau divides public speaking into three parts：the physical message, the visual message and the story message.