下文选自National Geographic, 关于濒危动物的文章,难度和篇幅均与雅思阅读考试相当,而且有意识地选择过期的期刊, 用于训练快速阅读能力,希望有助于大家备考雅思阅读。
One in Four Mammals at Risk of Extinction
Kimberly Johnson
for National Geographic
October 6, 2008
One in four of the worlds 5,487 known mammal species face extinction, according to a new conservation report card unveiled today.
Marine mammals face even steeper odds, with one in three species at risk of disappearing, according to the study.
The assessment, done as part of the International Union for Conservation of Natures Red List of Threatened Species, took more than 1,700 experts from 130 countries five years to complete.
The reports findings were released today in conjunction with this weeks IUCN meeting in Barcelona, Spain, and will appear later this week in the journal Science. Our results paint a bleak picture of the global status of mammals worldwide, the study authors wrote.
Humans are mostly to blame, as habitat loss, pollution, and hunting continue to squeeze at-risk species.
Under Threat
The new report updates the last IUCN survey conducted in 1996 and adds 700 species not previously assessed.
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