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：
60秒科学：Lytro-Camera-Refocuses-on-Upscale-Audience
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。
Until a few years ago even the best digital camera couldn’t fix an out-of-focus photo. A start-up called Lytro introduced a solution to this in 2012 when they created a camera that lets you snap pictures and play with the focus afterward.
That neat gadget cost $400 and looked like a mini telescope. A new version expected this summer will offer additional advances. Called the Lytro Illum, it looks like a serious SLR camera and has a $1,600 price tag.
The Illum still uses a special sensor covered by a matrix of microlenses, which capture the entire light field. That’s an enormous amount of data about the color, brightness and direction of all light rays within a frame. The camera doesn’t have a focus mechanism it comes up with an image based on a massive data analysis. You can then go in and change its choices.
The Illum improves on the original Lytro with a much faster sensor and processor, the same one Samsung uses in its new Galaxy S5 smartphone.
Probably more camera than most of us need. But a lifesaver when you screw up a once-in-a-lifetime photo.
