Solar powered tags to save koalas from bushfires 太陽(yáng)能耳標(biāo)可將考拉從叢林大火中解救出來(lái)

山東 李全忠

Scientists are working on a way to quickly find koalas in the path of a bushfire using ear tag tracking devices that weigh less than a slice of bread.Once the koalas are located,they can be kept safe until their habitat recovers and monitored once they are released.

Koalas have already been fitted with bluetooth ear tags that allow mobile phones to detect their location within 20 meters,but scientists are now working to fit solar powered ear tags with VHF transmitters(甚高頻發(fā)射機(jī))detectable from 250 meters away.Tests have shown that drones(無(wú)人機(jī))can map the VHF signal from the transmitters,allowing wildlife rescuers to save the koalas before a bushfire threatens them.

“The ear tags are light and because they're powered by a solar panel,there is no need for a battery which needs to change every six months,”said University of the Sunshine Coast research fellow Dr Romane Cristescu.“We believe these ear tags will last for the life of the koala.As severe bushfires become more common,the VHF solar ear tag could play a crucial role in saving koalas and conserving genetic diversity.”The research is being funded by WWF.Brave new ideas are crucial to helping restore species and landscapes and adapting to a changing climate.

Macquarie University wildlife researcher Dr Alexandra Carthey has also won funding to trial cardboard “habitat pods” to give small animals somewhere to hide from raptors(猛禽),wild cats and foxes in burnt landscapes following a bushfire.Raptors arrive within minutes after a fire,while wild cats and foxes can travel many kilometres towards fire,because they know the hunting will be excellent.

The habitat pods would be made of recycled cardboard,waterproofed with beeswax,and will break down naturally over about 12 months,leaving no trace.This idea could help small native animals persist following fires,allowing for a more rapid recovery.

1.What are scientists working on?

A.Improving koalas'habitat.

B.Offering koalas more bread.

C.Preventing a bushfire from breaking out.

D.Discovering a fast way of locating koalas in a bushfire.

2.What's the solar powered ear tags'advantage?

A.They have a lower cost. B.They can last for six months.

C.They can work in a wider range. D.They are preferred by the koalas in trouble.

3.What does the fourth paragraph mainly talk about?

A.The enemies of koalas.

B.Resources needed to survive bushfires.

C.Ways of avoiding being burnt by bushfires.

D.The reason for building habitat pods.

4.In which section of a newspaper can you read this passage?

A.Animal. B.Culture. C.Education. D.Business.

Ⅰ.Difficult sentence in the text

Raptors arrive within minutes after a fire,while wild cats and foxes can travel many kilometres towards fire,because they know the hunting will be excellent.猛禽在火災(zāi)后幾分鐘內(nèi)到達(dá)，而野貓和狐貍可以向著火行進(jìn)數(shù)公里，因?yàn)樗鼈冎肋@場(chǎng)狩獵會(huì)非常精彩。

【點(diǎn)石成金】本句是一個(gè)并列復(fù)合句，句中while引導(dǎo)兩個(gè)并列句；because引導(dǎo)原因狀語(yǔ)從句，the hunting will be excellent是賓語(yǔ)從句，作動(dòng)詞know的賓語(yǔ)。

Ⅱ.Text-centered chunks

work on致力于；從事

less than少于

last for持續(xù)

play a crucial role in在……中起關(guān)鍵作用

adapt to適應(yīng)

be made of由……組成

break down分解