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：Beer Marinade Cuts Grilling Carcinogens
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。
Grillmasters already know that a cold brew is a fine companion at the barbecue. So here’s some science to toast to—marinating meat in beer actually cuts the number of potentially cancer-causing compounds that form, as chops sizzle on the grill. So says a report in the Journal of Agricultural and Food Chemistry. [Olga Viegas et al, Effect of Beer Marinades on Formation of Polycyclic Aromatic Hydrocarbons in Charcoal-Grilled Pork]
The study started out like any barbecue—with pork chops, charcoal, and beer. Researchers marinated the chops for four hours in either regular or non-alcoholic pilsner, or a dark ale. Then they fired up the grill. After cooking, they analyzed the chops for polycyclic aromatic hydrocarbons, or PAHs, which are found in smoked and grilled meats, and may up your risk of cancer.
Turns out dark ale cut PAH levels in half, compared to unmarinated meat. The extra antioxidants in dark beer may be the trick, researchers say. Because PAHs form with the help of free radicals, and antioxidants could slow down that process. So if you’re health-conscious, but love to grill? A simple beer marinade might let you have your steak…and eat it, too.
—Christopher Intagliata
