英語聽力：長(zhǎng)毛象王國(guó)-13

Small ears also help to minimize heat loss, the opposite effect of those huge heat-dispersing ears of their relatives, African elephants. Other Beringia animals have more than a fur coat to help them cope with cold.

This skull belongs to the bizarre-looking saiga antelope, one of the less familiar faces of the ice age scene. Like the musk ox, saiga have a thick winter coat of hollow hairs for extra insulation. But they have another adaptation all of their own, an enormous bulbous nose. The nose is shaped like this because it contains large air sacs which pre-warm cold air while breathing in and retain precious moisture before breathing out. So saiga, too, were well-equipped to live in the cold, dry climate of Beringia. Today they’re only found in another bleak environment, the steppes of central Asia.

Some ice age animals took a totally different approach to surviving the winter. Arctic ground squirrels feed up in autumn, building up as much body fat as possible, and almost doubling their weight. As the first snows fall, they retreat to their underground burrows and bypass the winter entirely.

1 skull

n.頭骨;顱骨

參考例句：

The skull bones fuse between the ages of fifteen and twenty-five.頭骨在15至25歲之間長(zhǎng)合。

He fell out of the window and cracked his skull.他從窗子摔了出去，跌裂了顱骨。

2 antelope

n.羚羊;羚羊皮

參考例句：

Choosing the antelope shows that China wants a Green Olympics.選擇藏羚羊表示中國(guó)需要綠色奧運(yùn)。

The tiger was dragging the antelope across the field.老虎拖著羚羊穿過原野。

3 musk

n.麝香, 能發(fā)出麝香的各種各樣的植物，香貓

參考例句：

Musk is used for perfume and stimulant.麝香可以用作香料和興奮劑。

She scented her clothes with musk.她用麝香使衣服充滿了香味。

4 insulation

n.隔離;絕緣;隔熱

參考例句：

Please examine the insulation of the electric wires in my house.請(qǐng)檢查一下我屋子里電線的絕緣情況。

It is always difficult to assure good insulation between the electric leads.要保證兩個(gè)電觸頭之間有良好的絕緣總是很困難的。

5 bleak

adj.(天氣)陰冷的;凄涼的;暗淡的

參考例句：

They showed me into a bleak waiting room.他們引我來到一間陰冷的會(huì)客室。

The company's prospects look pretty bleak.這家公司的前景異常暗淡。

6 burrows

n.地洞( burrow的名詞復(fù)數(shù) )v.挖掘(洞穴)，挖洞( burrow的第三人稱單數(shù) );翻尋

參考例句：

The intertidal beach unit contains some organism burrows. 潮間海灘單元含有一些生物潛穴。 來自辭典例句

A mole burrows its way through the ground. 鼴鼠會(huì)在地下鉆洞前進(jìn)。 來自辭典例句

7 entirely

ad.全部地，完整地;完全地，徹底地

參考例句：

The fire was entirely caused by their neglect of duty. 那場(chǎng)火災(zāi)完全是由于他們失職而引起的。

His life was entirely given up to the educational work. 他的一生統(tǒng)統(tǒng)獻(xiàn)給了教育工作。