适合年龄
10岁左右
绘本简介
The Great Plains of the United States stretch from the Rocky Mountains in the west to beyond the Missouri River in the east. The Great Plains extend north into Canada and south nearly to Mexico.
Long ago the Great Plains were characterized by gently rolling hills covered with tall grasses.With few trees to block them, strong winds whipped across the Great Plains, blowing hot in the summer and bitterly cold in the winter. It was dry, with rainfall averaging 20 inches (51 cm) a year.
A little over two hundred years ago, in the early 1800s, there were only 150,000 people living in the Great Plains. Most were Native Americans, but there were also European settlers.
美国的大平原从西部的落基山脉一直延伸到东部的密苏里河之外。 大平原向北延伸至加拿大，向南延伸至墨西哥。 很久以前，大平原的特点是平缓起伏的丘陵长满高草，几乎没有树木阻挡，大平原上刮起了大风，夏天炎热，冬天寒冷。 天气干燥，有 年平均降雨量为 20 英寸(51 厘米)。 两百多年前，在 1800 年代初期，大平原上只有 150,000 人。 大多数是美洲原住民，但也有欧洲定居者。
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)。
