Scientist tracks wild camels through space technology

山東 孫啟祿

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在遙感科學家劉少創(chuàng)的辦公室里，有一張他十年前蹲守在新疆戈壁灘上拍攝的野駱駝的巨幅照片。

1In the office of remote sensing scientist Liu Shaochuang, there is a huge photo of a wild camel he took a decade ago.He crouched(蹲)for hours by a pool of water in the Gobi Desert to take the photo.This is the subject of his research.

2Living in the harsh deserts in northwestern China and southwestern Mongolia, the wild camel is listed as critically endangered by the International Union for Conservation of Nature.The population of this species is currently less than 1,000, of which around 650 are in China.

3Because wild Bactrian camels are fully migratory and can travel over long distances, scientists used to learn their habits by studying hoof (蹄) prints and droppings.It was hard to find one camel in the desert, let alone track it.But, Liu thought his expertise in satellite navigation and remote sensing might be useful in the study of wild camels.

4It was not easy at first.His team had to spend several weeks each year braving dust and sandstorms in the Gobi Desert seeking out camels.“The most thrilling moment was attaching (系上) trackers to the wild camels,”Liu recalls.On May 6, 2012, Liu's team, for the first time, succeeded in putting a satellite positioning collar on a wild camel in the Lop Nur Desert.

5The tracking collar, equipped with special receivers, weighs only a few hundred grams.It can detach (拆卸) automatically and will not have a negative influence on the daily lives of the animals.According to Liu, at least seven wild camels are currently fitted with tracking collars, and their locations are transmitted via satellites every day.Based on the tracking data, scientists can get to know their migratory paths, living environments and possible threats they may experience.

6Liu's latest discovery is that the suitable habitat range has shrunk greatly due to climate change, and that wild camels have moved to the colder Altun Mountain Range in China, and higher-altitude regions in Mongolia as a result.“They face more dangers,”Liu says.“For example, the narrowing habitats may lead to an increased chance of attacks by wolves,a reduction in drinking water and a higher risk of disease.”

Reading Check

Inference 1.What can be inferred about the wild camel from paragraph 2?

A.It lives in southeastern China.

B.It reacted violently to remote sensors.

C.It has a large population globally.

D.It can be seen mostly in China.

Detail 2.Which of the following is the most exciting according to Liu?

A.Studying wild camels'hoof prints.

B.Taking photos of wild camels'droppings.

C.Putting trackers on wild camels.

D.Finding one wild camel in the desert.

Gist 3.What's paragraph 5 mainly about?

A.Sandstorms in the Gobi Desert.

B.The tracking collar's usefulness.

C.Liu's measures to protect wild camels.

D.Threats that wild camels may experience.

Vocabulary 4.Which word can replace the underlined word“shrunk”in paragraph 6?

A.Reduced.B.Improved.

C.Survived.D.Changed.

Language Study

I.日積月累

endangeredadj.瀕危的

currentlyadv.目前

migratoryadj.遷徙的

trackv.追蹤

thrillingadj.激動人心的

be listed as 被列為……

let alone 更別說

seek out 找出

attach...to 把……附在……上

succeed in doing 成功做……

satellite positioning collar 衛(wèi)星定位項圈

have a negative influence on 對……有負面影響

due to 由于

as a result 結果

Ⅱ.單句填空

1.The wild camel is listed ________an endangered species.

2.This matter is ________(current)being discussed.

3.That was really a ________(thrill)experience.

4.Attach the coupon(優(yōu)惠券) ________the front of your letter.

5.He succeeded in ________(get)a place at art school.

6.Watching TV for a long time has a negative influence ________children's health.