英語聽力：猛瑪象進(jìn)城記—1

Downtown L.A., the ultimate modern American city, but Los Angeles skyscrapers are built over the graves of thousands of extinct Ice Age beasts.

Today all we have are memorials to these vanished animals, but imagine if they had survived into the present day, they would have had to adjust to a very human world.

The reality is, mammoths never made it beyond the end of the last Ice Age, but many other creatures did. And over the past 14,000 years or so, they've had to adapt to an increasingly human landscape, a landscape of concrete and steel.

In this program, we will travel back into the past to investigate why the giant beasts of North America became extinct and to find out how those animals that did survive have adapted to life in our modern world.