PTE考生目前最大的问题之一就是练习题缺乏。除了有限的基本官方书（PLUS，Testbuilder, OG）之外
就没有题了。很多英语基础不是很扎实的同学很难找到练习材料。悉尼文波雅思PTE培训学校专门为澳洲，尤其是悉尼、墨尔本的PTE考生准备了适合PTE听力阅读练习的科学60秒。各位PTE同学可以练习PTE听力中的summarise spoken text和PTE口语中的retell lecture，PTE听力口语-科学60秒-Frosty Moss练习记笔记技巧和复述。废话少说，下面开始：
听力内容：
60秒科学节目（SSS）是科学美国人网站的一套广播栏目，英文名称：Scientific American – 60 Second Science,节目内容以科学报道为主，节目仅一分钟的时间，主要对当今的科学技术新发展作以简明、通俗的介绍，对于科学的发展如何影响人们的生活环境、健康状况及科学技术，提供了大量简明易懂的阐释。
The river animals have it worst.
Thanks to water extraction, dam building and other river-changing pursuits, more than three-quarters of river amphibians, fish and mammals have disappeared since 1970.
That’s not three quarters of species, mind you, it’s three quarters of the individuals in a given population.
And it’s not just the rivers.
Nearly 40 percent of both land and sea animals, from sardines to elephants, have disappeared over the same time span.
The numbers are from a new report from the conservation group World Wildlife Fund.
These lost animals have been replaced by either people or our domesticated animals—chickens, cows and pigs, among others.
Farms to feed people displace forests that feed wildlife.
And people also eat wildlife directly, from fish to bushmeat.
As a result, the survey finds fewer and fewer individuals among more than 3,000 species and 10,000 populations surveyed.
But there is hope.
The vast majority of these beleaguered species are not extinct.
And in rich regions like the U.S., Europe and Japan, wildlife numbers are actually increasing:
coyote, deer, turkey and other forest animals, for example, as the forest regrows along the east coast of North America.
Exporting that trend could help stave off the gathering sixth mass extinction.
