Unit 1 A Land of DiversityLanguage points1.diversity=variety 多样性、变化多样性、变化a diversity of vegetablesdiversify vt.使使多样性，使多样性，使不同不同diversify ones skills/interestsWe should diversify the syllabus(教学大纲）教学大纲）to attract more students.A company should diversify.2.illustrate vt.说明、阐明（用图示、实例等）说明、阐明（用图示、实例等）The lecturer illustrated the theory with examples.Please illustrate how to use the machine.illustration n.实例实例 by way of illustration 以实例说明以实例说明3.California is the third largest state in the 序数词可以修饰形容词的最
