一万五千个单词的雅思水平是

洛阳大华雅思为您解答：根据雅思考试真题和雅思考生的经验来看，想要达到雅思6.5分，大概需要5000左右的词汇，想要达到雅思7.5分的成绩，至少需要考生熟练应用8000以上的词汇。
　　雅思四个部分都有相应的词汇，各自的词汇量要求也不同，一般而言：
　　雅思阅读的词汇量在7000左右(看到英文知道意思，不要求拼写);
　　雅思写作词汇在3000左右(熟练使用而并非掌握);
　　雅思口语和听力的词汇在3000-5000左右(要求能听懂，并会拼写)。

雅思阅读the light of power

阅读原文
【1】Moving water was one of the earliest energy sources to be harnessed to reduce the workload of people and animals. No one knows exactly when the waterwheel was invented, but irrigation systems existed at least 5,000 years ago, and it seems probable that the earliest waterpower device was the noria, a waterwheel that raised water for irrigation in attached jars. The device appears to have evolved no later than the fifth century B.C., perhaps independently in different regions of the Middle and Far East.
【2】The earliest waterpower mills were probably vertical-axis mills for grinding corn, known as Norse or Greek mills, which seem to have appeared during the first or second century B.C. in the Middle East and a few centuries later in Scandinavia. In the following centuries, increasingly sophisticated waterpower mills were built throughout the Roman Empire and beyond its boundaries in the Middle East and northern Europe. In England, the Saxons are thought to have used both horizontal and vertical-axis wheels. The first documented English mill was in the eighth century, but three centuries later about 5,000 were recorded, suggesting that every settlement of any size had its mill.

TPO阅读答案

洛阳大华雅思提醒您

1.这个单词后面出现了to，表目的或作用，整句话的意思就是水资源被用于减轻人和动物的劳动。所以很容易推出文中单词harnessed是使用的意思，因此选择D。
2.这个题可以看着选项到原文照对应点，A对应原文第二句，正确，不选。B对应虽然没有直接在原文中提到，但是也可以有这层意思，可以作为待定选项。但看到C之后就可以排除B了，因为C和原文第一句有了直接冲突，因此选择C。D对应这段的最后一句（出现了perhaps）。