适合年龄
9岁左右
绘本简介
For five centuries starting around 27 BC, the leaders of the Roman Empire ruled successfully over large areas of Europe. Eventually, the empire became so vast that it had to be divided between two emperors. This division considerably reduced the power of the empire, which lost control of its borders, leaving them open to attack from invaders. Taking advantage of the weakness and lack of strong leadership, the Visigoths attacked and destroyed the city of Rome. After this devastating blow came an even greater challenge to the empire: A ferocious leader named Attila the Hun attacked the Roman Empire from the east and the west. To save the empire, Aetius, a great Roman general, persuaded several tribes in the empire to join forces and form an army to fight Attila. This huge army defeated Attila at the monumental Battle of Chalons. Photographs, maps, and illustrations support the text..
从公元前 27 年左右开始的五个世纪里，罗马帝国的领导人成功地统治了欧洲的大片地区。 最终，帝国变得如此庞大，以至于它不得不被两个皇帝瓜分。 这种分裂大大削弱了帝国的力量，失去了对边界的控制，使它们容易受到入侵者的攻击。 西哥特人利用软弱和缺乏强有力的领导，袭击并摧毁了罗马城。 在这次毁灭性的打击之后，帝国面临更大的挑战：一位名叫阿提拉的凶猛的匈奴人从东西方进攻罗马帝国。 为了拯救帝国，罗马大将埃提乌斯说服了帝国的几个部落联合起来组成军队对抗阿提拉。 这支庞大的军队在不朽的沙隆战役中击败了阿提拉。 照片、地图和插图支持文本。
RAZ有严密的分级体系：根据全文词汇数、高频词词汇数与比例、低频词词汇数与比例、句子长度、句子复杂度、句式、插图信息量、思想深度、主题等多个角度，将整个阅读体系分为aa，A-Z共27个级别。
RAZ旨在帮助孩子找到适合孩子水平的级别，通过在同一级别下的大量阅读逐步提高孩子的阅读能力。
RAZ按难度分为27个级别，AA—C这4个级别对应幼儿园阶段; D—J这7个级别对应美国小学一年级;K—P这6个级别对应美国小学二年级;Q—T这4个级别对应美国小学三年级;U—W这3个级别对应美国小学四年级;X—Z对应美国小学五六年级(相当于国内高中毕业)。
