墨尔本PTE素材库——Cats’ Cunning Extends beyond the Hunt
2016/08/04墨尔本PTE素材库——Human Eats Can Hear Better-Than-CD Quality
2016/08/04
墨尔本PTE素材库——Fat Substitutes May Make You Fatter
中文批注
这篇文章的内容其实挺出乎意料的。原来有些Fat substitutes不单没法帮助大家达到减肥的效果，反而有可能会让你体重增加。第二段描述了传统的那些snacktacular options将成分中的糖、脂肪都换成了人造的替代品。一般来说，你的身体会认为你在摄入糖分和脂肪，但其实是将卡路里的摄入量降到最低。但是一个最新的研究显示，这样的技术，很有可能会产生适得其反的结果。
澳大利亚语言学院(Australian Institute of Language)整理的墨尔本PTE素材库，旨在帮助所有PTE的考生，能够在平时复习和积累的过程中，也能够接触和PTE考试内容相关的听力、阅读、写作、口语的素材哦！基本每一篇视频和音频都与PTE官方所提供的Questions Critertia所吻合！这篇关于Fat Substitutes的文章里，就有不少的生词，大家可以好好学习一下这一期的key vocabulary，扩充自己的词汇量！
【key Vocabulary】
Fake：假的。
Slip into：slip是滑的意思，slip into指悄悄进入，堕入，陷入。
Substitute：替代品。
Neuroscience：神经科学
Array：排列，an array of 是一串，一系列，大量的意思。
Snacktacular：代表delicious的意思。
Artificial：人工的，人造的。
Sleight：技巧，手法。
Ingenious：机灵的，别出心裁的，巧妙的。
Crave：渴望。
Backfire：逆火，放逆火，产生适得其反的后果。
Olestra：蔗糖聚酯
Nosh：快餐，吃快餐/小吃的人。
Mouthful：满口。
Full transcript
Counting on food with fake fats to help you slip into last year’s bathing suit? Better count again. Because a new study with rats shows that low-cal fat substitutes can actually promote weight gain. The work appears in the journal Behavioural Neuroscience. [Susan Swithers, Sean Ogden and Terry Davidson, “Fat Substitutes Promote Weight Gain in Rats Consuming High-Fat Diets”]
Dieters can choose from an array of snacktackular options in which sugars and fats are replaced by artificial, low-calorie substitutes. That sleight of hand seems ingenious. You can let your body think it’s getting the sweets and fats it craves while keeping the calorie count to a minimum.
But the new study suggests that this strategy is likely to backfire. Rats that consumed a mix of full-fat chips and chips with olestra wound up eating more and got fatter than rats that noshed on regular chips alone.
Their bodies were apparently getting mixed messages. A mouthful of fat is usually a signal that calories are coming, and the body reacts by getting ready to burn fuel. But olestra, which tastes like fat, carries no calories at all. So the body soon learns to stand down in the face of fat. All fat. Even real fat. Because as Shakespeare almost said, a chip by any other name still swells your seat.
—Karen Hopkin
(Source：http://www.scientificamerican.com/podcast/episode/fat-substitutes-may-make-you-fatter-11-06-24/)
