11. puzzle n. 谜;难题 vt. & vi. (使)迷惑;(使)为难
12. biology n. 生物学→biological adj. 生物的
13. gentle adj. 温和的;文雅的→gently adv. 温和地;文雅地
14. physicist n. 物理学家→physics n. 物理→physical adj. 物理的;身体的;物质的
15. climate n. 气候
16. crash vi. & vt. 碰撞;坠落
17. spaceship n. 宇宙飞船
18. pull n. & vt. 拉(力;拖;牵引力
19. float vt. & vi. (使)浮动;(使)漂浮 n. 漂浮物
20. spread vt. & vi. 展开,铺开;散布;扩大;延伸
21. method n. 方法
22. mass n. 质量;团;块;大量;(前加the) 群众
23. cheer vt. & vi. (使)高兴、振奋;(对)欢呼→cheerful adj.高兴的→cheerless adj. 不高兴的;阴冷的高手过招
24. puzzle vt. & vi.(使)迷惑;(使)苦思→n. 迷;难题
25. to begin with 以......开始;由......作为开头;首先
26. in time 及时;最终;迟早
27. in one' s turn 轮到某人;接着
28. prevent... from 使......不做事;阻止......做某事
29. block out 挡住(光线)
30. be off = set off 出发;动身;不用上班/学/开张
31. break out (灾难、战争等)突发;爆发
32. watch out 密切注视;当心;提防
1. Do you think our education _________(制度) needs improving?
2. The _________(气候) of southern Florida attracts thousands of tourists each winter.
3. Without practice there would be no ________(理论).
4. The hen was old and it stopped ________(下蛋) eggs.
5. The idea ________(存在) only in the minds of us young people.