四級考試是許多童鞋必須通過的考試，其重要程度不言而喻。希望通過四級聽力天天練，童鞋們可以提高聽力水平，高分通過四級，沖刺六級。

全文聽寫，童鞋們注意數字聽寫規(guī)則哦~~


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，大部分人都生活在農村。但是世界已經發(fā)生了變化。到明年的某些時候，超過一大半的人都會居住在城市中，這將是歷史上的第一次。這是美國最近的一項評估結果。城市生活不一定總是不好，但是很多專家這樣的城市化進程表示了擔憂。一項新的報告顯示城市化已經對人類的健康和環(huán)境質量產生了巨大的影響。這份報告顯示：在所有居住在城市里的30億人來說，大約有10億是處于居無定所的情況。 ——譯文來自: 悠悠和嘟嘟