PTE听力口语练习-科学60秒- Crunchy Foods

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:Eaters Assume Crunchy Foods Have Fewer Calories


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。

When food is gooey, we assume it’s more fattening than harder foods. For instance, most people guess that a soft, warm cookie has more calories than a cooled-down, crunchier version.

New research confirms that food’s texture in your mouth—also called “mouthfeel” or “oral haptics”—influences estimates of calorie counts. And thus affects total food consumption. The study is in the Journal of Consumer Research. [Dipayan Biswas et al, Something to Chew On: The Effects of Oral Haptics on Mastication, Orosensory Perception, and Calorie Estimation]

Scientists offered brownies to volunteers. Half got hard brownies. The other half got softer ones. They all had to guess the number of calories in each sample. And the group that ate the softer brownies produced estimates for their caloric value 55 percent higher than the estimates for the hard brownies by the subjects who ate them. The hard brownie group also ate more brownies. Probably because they thought they were getting a caloric bargain due to mouth feel.

The researchers also offered brownies to a second group of volunteers. Again, half received hard brownies, the other half got soft ones. But this time participants were not asked to estimate calories. This group gobbled up significantly more of the softer brownies. Presumably because they were considered tastier.

So remember: the cookie might be crunchy…but the calories are still gooey.

—Christie Nicholson


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