英語聽力：美洲大平原-10

Colombian mammoths had to feed almost round the clock to fuel their bulky bodies. But as the ice age ended, food was not the mammoths' biggest problem. A new and deadly predator began to infiltrate the plains, a match for any prey, even the mighty mammoths.

These people knew how to make lethal weapons. They let spear points, knife blades and other tools scattered all across the plains. And they spread fast. The evidence suggests it took them only 1,000 years to spread across the entire northern continent.

What can we learn today about the lifestyle of these butchers of the plains? They left a stream of clues to how they lived, including strange pyramids of rocks. Inside are bones of animals that show how they were slaughtered and cut up for meat. These cares are thought to be cold-weather larders, marking prehistoric hunting camps. When hunting parties had more meat than they could eat or carry, they would stash the surplus under these rocks to be collected later. They seemed to have used bones as markers.

1 predator

n.捕食其它動物的動物;捕食者

參考例句：

The final part of this chapter was devoted to a brief summary of predator species.本章最后部分簡要總結了食肉動物。

Komodo dragon is the largest living lizard and a fearsome predator.科摩多龍是目前存在的最大蜥蜴，它是一種令人恐懼的捕食性動物。

2 infiltrate

vt./vi.滲入，透過;浸潤

參考例句：

The teacher tried to infiltrate her ideas into the children's minds.老師設法把她的思想滲透到孩子們的心中。

It can infiltrate as much as 100 kilometers into enemy territory at night.可以在夜間深入敵領土100千米。

3 prey

n.被掠食者，犧牲者，掠食;v.捕食，掠奪，折磨

參考例句：

Stronger animals prey on weaker ones.弱肉強食。

The lion was hunting for its prey.獅子在尋找獵物。

4 mighty

adj.強有力的;巨大的

參考例句：

A mighty force was about to break loose.一股巨大的力量即將迸發(fā)而出。

The mighty iceberg came into view.巨大的冰山出現在眼前。

5 lethal

adj.致死的;毀滅性的

參考例句：

A hammer can be a lethal weapon.鐵錘可以是致命的武器。

She took a lethal amount of poison and died.她服了致命劑量的毒藥死了。

6 scattered

adj.分散的，稀疏的;散步的;疏疏落落的

參考例句：

Gathering up his scattered papers,he pushed them into his case.他把散亂的文件收拾起來，塞進文件夾里。

7 slaughtered

v.屠殺，殺戮，屠宰( slaughter的過去式和過去分詞 )

參考例句：

The invading army slaughtered a lot of people. 侵略軍殺了許多人。 來自《簡明英漢詞典》

Hundreds of innocent civilians were cruelly slaughtered. 數百名無辜平民遭殘殺。 來自《簡明英漢詞典》

8 larders

n.(家中的)食物貯藏室，食物櫥( larder的名詞復數 )

參考例句：

9 prehistoric

adj.(有記載的)歷史以前的，史前的，古老的

參考例句：

They have found prehistoric remains.他們發(fā)現了史前遺跡。

It was rather like an exhibition of prehistoric electronic equipment.這兒倒像是在展覽古老的電子設備。

10 stash

v.藏或貯存于一秘密處所;n.隱藏處