英语听力：美洲大平原-2

As North America emerged from the grip of the last ice age, the door was opened to outsiders for the very first time. As these early immigrants pushed their way south, they found themselves in a land of an unimaginable opportunity, overflowing with game mammals, animals with no experience of humans or their weapons.

The arrival of these hunters coincided with a time of great change of the plains. Within the next few hundred/ years, many ice age animals vanished forever. So 13,000 years on, how do we know anything about this lost world? There are still clues to be found if you know where to look.

In the Bighorn Mountains of Wyoming is a hidden cave recreated here, where over the millennia thousands of animals have fallen to their death. Preserved below the surface are bones dating all the way back to the ice age. Remains of bison lie alongside antelope and rabbit. But they are mixed with those of camels, extinct horses, giant wolves.

1 overflowing

n. 溢出物,溢流 adj. 充沛的，充满的 动词overflow的现在分词形式

参考例句：

The stands were overflowing with farm and sideline products. 集市上农副产品非常丰富。

The milk is overflowing. 牛奶溢出来了。

2 millennia

n.一千年，千禧年

参考例句：

For two millennia, exogamy was a major transgression for Jews. 两千年来，异族通婚一直是犹太人的一大禁忌。

In the course of millennia, the dinosaurs died out. 在几千年的时间里，恐龙逐渐死绝了。

3 remains

n.剩余物，残留物;遗体，遗迹

参考例句：

He ate the remains of food hungrily.他狼吞虎咽地吃剩余的食物。

The remains of the meal were fed to the dog.残羹剩饭喂狗了。

4 antelope

n.羚羊;羚羊皮

参考例句：

Choosing the antelope shows that China wants a Green Olympics.选择藏羚羊表示中国需要绿色奥运。

The tiger was dragging the antelope across the field.老虎拖着羚羊穿过原野。