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，练习记笔记技巧和复述。废话少说，下面开始：
60秒科学：Hacked E-Cigs May Get around Regulations
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。
Earlier this year, the U.S. Food and Drug Administration said it wants to regulate electronic cigarettes. The agency has even promised to shell out $270 million to 48 research projects for study of the health risks of °∞vaping.°±
But this effort to get ahead of a possible public health problem might be pointless. Because even if we learned the risks of tobacco-less e-cigs, some users are modifying these devices to produce stronger flavors, more impressive vapor clouds and to deliver even more nicotine.
Virginia Commonwealth University is using part of their $18.1-million share of the FDA’s money to study this e-cigarette hacking. Of particular concern are modifications that make these devices burn hotter and supposedly produce a larger vapor cloud when exhaled.
E-cigarette fans proudly point out that these devices produce water vapor rather than smoke. Scientists, however, want to know what may be carried along with the water vapor°™especially when vaping liquids are superheated, possibly emitting formaldehyde and other toxic components. Why, it’s enough to make you question one company’s choice of renowned vaccine expert Jenny McCarthy to be their e-cigarette celebrity pitchwoman.