PTE听力口语练习-科学60秒-Fat-Fed Fidos

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:

Fat-Fed Fidos Foil Fiends First


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。

Detection dogs fed diets high in fat were better at sniffing out explosives and contraband than dogs given their regular food. Amy Kraft reports.


Specially trained dogs have long been used to sniff out drugs, dangerous chemicals and explosives. But now researchers have discovered a way to enhance a detection dog’s schnoz: change its diet.

For 18 months researchers rotated 17 trained detection dogs through three different diets: high protein, regular adult dog food, and regular adult dog food with corn oil. When the dogs feasted on the food with the high fat content, the regular dog food with corn oil, they performed better in exercise and detection tests. The dogs performed just as well on the high protein diet as on their standard fare, apparently a function of the amount of fat in the food rather than anything related to the protein content.

What’s fat’s magic? The researchers say that dogs fed high fat diets are less fatigued after exercise, which reduces panting and sensitizes sniffing.

The research was funded by the Department of Justice and presented at the recent Companion Animal Nutrition Summit in Atlanta.

The findings could change how detection dogs are fed to turn the merely star smellers into super sniffers.

—Amy Kraft


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