Question

Four decades ago a group of college students visited the mountains of Borneo to examine moth (蛾) populations. Now a team of British scientists, including a member of the original trip, has returned to the same sites to repeat the survey. They have found that, due to rising temperatures, the insects now live 68 meters higher.

Global warming is forcing tropical (熱帶的) species uphill to escape the rising temperatures at a rate of nearly 2 meters a year, the new study from Borneo suggests.

Since this was the only chance to repeat the original survey, the scientist did everything they could to do it exactly the same way, going at the same time of year, in July and August, using photographs to find the exact original sites of the moth traps.

"While this is the first study of insects, a few other studies of tropical species are starting to appear," said Thomas. "If you look across all those studies, you’ll find the same results, and it’s extremely difficult to think of any other explanation for them."

While some species might survive by finding places on the mountains with temperatures similar to those of their original habitats, others may run out of habitat on the rocky peaks, warns the study.

In a paper in the journal Naturein 2004, Thomas and 13 other experts analyzed the habitats of 1,100 species on five continents, and estimated that on average one quarter were at risk of extinction.

Last year a paper published in the Public Library of Science in the US warned that the risk of extinction in the tropics was becoming more and more serious. The authors, Jana and Steven Vamosi, estimated that 20-45% of tropical species were at risk of extinction.

1.If the temperature continues to rise at the same rate for ten years, the insects will live about ______.

A．6.8 meters higher                       B．19 meters higher

C．34 meters higher                       D．68 meters higher

2.What’s the problem for some species moving up mountains?

A．There’ll be too little space.

B．The temperature will be much too low.

C．They will be at greater risk of extinction.

D．They’ll find it hard to adapt to the environment.

3.We can learn from the passage that ______.

A．this survey of moths has been carried out many times

B．some scientists have put forward other explanations for the results

C．scientists tried to repeat the original survey

D．20-45% of tropical species were estimated to be at risk of extinction in 2004

4.Which of the following has been mainly discussed in the passage?

A．Climate change forcing moths higher.

B．Protecting moths from extinction.

C．How to research tropical moths.

D．How to study moths living on mountains.

 

Answer 1

【答案】

1.B

2.A

3.C

4.A

【解析】

試題分析：本文以科學家的一個實例來講述的全球變暖變化對生物的影響，導致生物的棲息地的越來越高。

1.B 計算題。根據第一段Four decades ago a group of college students visited the mountains of Borneo to examine moth (蛾) populations. Now a team of British scientists, including a member of the original trip, has returned to the same sites to repeat the survey. They have found that, due to rising temperatures, the insects now live 68 meters higher.說明40年上升了68米，那么十年大約上升了19米。故B正確。

2.A 細節題。根據第五段, others may run out of habitat on the rocky peaks, warns the study說明他們在山頂的空間不夠，故A正確。

3.C 細節題。根據文章第3段Since this was the only chance to repeat the original survey, the scientist did everything they could to do it exactly the same way, going at the same time of year, in July and August, using photographs to find the exact original sites of the moth traps.說明這次試驗中開心科學家都想模仿以前的實驗，故C項正確。

4.A 主旨大意題。根據文章第一段Four decades ago a group of college students visited the mountains of Borneo to examine moth (蛾) populations. Now a team of British scientists, including a member of the original trip, has returned to the same sites to repeat the survey. They have found that, due to rising temperatures, the insects now live 68 meters higher.可知正是因為氣溫的升高，讓蛾子的棲息地高了68米，故A項說法正確。

考點：考查環境保護類短文閱讀

點評：本文以科學家的一個實例來講述的全球變暖變化對生物的影響，本文要求考生讀懂文章中的每個句子的意思還要推理它們之間的關系，結合自己的生活常識和經驗，再通過邏輯推理和判斷，理解文章的言外之意，從而揭示文章的深層涵義。任何一篇文章都有其特定的寫作目的，讀者應當知道如何去做或按照某種方式傳遞思考問題。