包邮自然篇-拯救我的托福题英语

contents
目录
前言|i
使用本书|iii
topic 1: classification of living organisms 生物分类|1
topic 2: photosynthesis 光合作用|6
topic 3: trees 树木|9
topic 4: rain forest 雨林|13
topic 5: redwood 红杉|16
topic 6: fall colors 秋色|20
topic 7: life cycle of flowering plants 开花植物的生命周期|23 topic 8: animal kingdom 动物王国|26
topic 9: animal thermoregulation 动物的温度调节|30
topic 10: life cycle of frogs 青蛙的生命周期|33
topic 11: the ant colony 蚁群|36
topic 12: ants’ life cycle 蚂蚁的生命周期|38
topic 13: life cycle of worker bees 工蜂的生命周期|41
topic 14: honey bee colony 蜂群|43
topic 15: life cycle of a butterfly 蝴蝶的生命周期|46
topic 16: leafcutter ants 切叶蚁|49
topic 17: life cycle of pacific salmon 鲑鱼的生命周期|52
topic 18: how elephants cope with heat 大象如何消暑|56
topic 19: how penguins cope with cold 企鹅如何御寒|59
topic 20: animal migration 动物迁徙|63
topic 21: bat and echolocation 蝙蝠回声定位|67
topic 22: honey bee dancing 蜜蜂舞动|69
topic 23: monarch butterfly migration 帝王蝶迁徙|72
topic 24: ecosystem 生态系统|75
topic 25: carbon cycle 碳循环|78
topic 26: energy transfer in ecosystems 生态系统能量流动|80
topic 27: coral reef 珊瑚礁|85
keyword list 生词表|89
bank of expressions 表达库|102
references 参考文献|112