1. A raw materials 原材料2. C retreat 撤退,退却 The enemy retreated after heavy losses. 敌人在重创之后撤退了。3. B nightmare 梦魇;恶梦 In his nightmares they burned his house. 在他的噩梦中,他们烧了他的房子。4. A predict 预言;预料;预报 He predicted that an earthquake was imminent. 他预言即将发生地震。 5. D crucial 决定性的,重要的 These negotiations are crucial to the future of our firm. 这些谈判对我们公司的前途至关重要。 6. D instructions 说明、须知 7. A decrease 减;减少,减小 They are making every effort to decrease the production cost. 他们正尽力减少生产成本。 8. D a burst of爆发9. A convert… into 转变,变换 They converted the garage into a theater. 他们将车库改成戏院。10 B start up 发动, 开动