Ⅰ.单词识记 1．________ vi.适应；适合 2．________ vi.不见；消失 3．________ adj.绝种的；消亡了的 4．________ vi.进化；演变 答案　1.adapt　2.disappear　3.extinct　4.evolve

Module 6 Unexplained Mysteries of the Natural World Period Two Listening and Speaking;Function;Pronunciation;Writing and Everyday English