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。墨尔本文波雅思PTE培训学校专门为墨尔本，悉尼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：
Corn’s Influence on Culture Bumped Farther Back
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。
About 5,000 years ago in Peru, culture kicked into high gear. During what’s called the late Archaic period, South Americans formed permanent communities with complex architecture, religion and agriculture. And now scientists have shown that maize played a big part in this development. The study is in the Proceedings of the National Academy of Sciences. [Jonathan Haas et al.,Evidence for maize (Zea mays) in the Late Archaic (3000–1800 B.C.) in the Norte Chico region of Peru]
For decades, researchers have argued about whether corn was a dietary staple in the late Archaic. The answer, it turns out, was hidden in the turf, tools and toilets of 13 archaeological sites along the coast of Peru. Of 126 soil samples dating back to the late Archaic, 48 percent contained maize pollen. Of 14 stone tools found at one site, 79 percent still carried traces of maize. And finally, scientists analyzed 62 human and canine coprolites, or fossilized feces. Maize was the dominant starch, present in 69 percent of the ancient samples.
Some of the evidence is literally crap, but the conclusion isn’t: a corny dietary staple helped drive the growth of civilization in the late Archaic.
—Sophie Bushwick
