四级考试是许多童鞋必须通过的考试，其重要程度不言而喻。希望通过四级听力天天练，童鞋们可以提高听力水平，高分通过四级，冲刺六级。

全文听写，童鞋们注意数字听写规则哦~~


Hints:
the United Nations
50 years ago, most people lived in rural areas. But the world has changed. By some point next year, more than half of all people will live in cities, for the first time in history. So says the most recent estimate from the United Nations. City life is not always a bad thing, but many experts worry about this process of urbanization. A new report says it is having a huge effect on human health and the quality of the environment. Of the 3 billion people who live in cities now, the report says, about 1 billion live in unplanned settlements.
50年前，大部分人都生活在农村。但是世界已经发生了变化。到明年的某些时候，超过一大半的人都会居住在城市中，这将是历史上的第一次。这是美国最近的一项评估结果。城市生活不一定总是不好，但是很多专家这样的城市化进程表示了担忧。一项新的报告显示城市化已经对人类的健康和环境质量产生了巨大的影响。这份报告显示：在所有居住在城市里的30亿人来说，大约有10亿是处于居无定所的情况。 ——译文来自: 悠悠和嘟嘟