Questions 25 to 27 are based on the following news.

The yellow-spotted bell frog is back from the dead. (25) It was thought to have become extinct but has now been seen for the first time since 1973.

Dr. David Hunter, a threatened species officer at the New South Wales Environment Department, was there when about 100 frogs were found in a remote stream, the location of which is being kept secret.

The yellow-spotted bell frog's disappearance is likely to have been caused by a range of factors, including disease, a loss of habitat and pollution.

(26) Experts believe that exposure to a deadly fungus that arrived in Australia from Africa in the 1970s decimated frog numbers.

A collection of tadpoles has been established at Taronga Zoo in Sydney as part of a plan to re-populate rivers and streams.

The zoo’s Michael McFadden says the breeding program should help this vulnerable species survive.

Scientists have warned there are more than 40 threatened frog species fighting for survival in Australia.

(27) The International Union for Conservation of Nature has said that one-third of the world’s 6,000 species of amphibians are under threat of extinction.

The New South Wales Environment Minister, Frank Sartor, said the discovery of yellow-spotted bell frogs was the amphibian equivalent of discovering the Tasmanian Tiger，a carnivorous Australian marsupial that died out in the 1930s.

 

题目

 

Questions 25 to 27 are based on the following news. At the end of the news item , you will be given 15 seconds to answer the questions.

Now, listen to the news.

25. The yellow-spotted bell frog was thought to have become extinct since ____.

A. 1930 B. 1937   C. 1970 D. 1973

26. Experts believe that____ exposure to a deadly that arrived in Australia from Africa decimated frog numbers.

A. fungus B. snake  C. bird D. disease

27. How many species of amphibians are under threat of extinction in the world?

A. About 40.          B. About 1.500.

C. About 2,000.      D. About 6，000.

 

答案解析

News 10

 

25. D 细节题。 新闻说黄点响铃蛙于1973年绝迹，因此选D。

26. A 细节题。 科学家们认为一种从非洲引进到澳大利亚的剧毒菌类是造成黄点响铃蛙数量骤减的原因，因此选A。

27. C推断题。国际自然保护联盟说世界上共有6000种两栖类，其中的1/3瀕临灭 绝，因此大约有2000种两栖类濒临灭绝，因此选C。