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：
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。
Ring–tailed lemurs are a chatty lot.They vocalize to exchange information.And they also communicate via a veritable morgasbord of stinky secretions they use to marktheir territory and advertise their romanticavailability.
But male lemurs, which have more scent glandsthan do females, are really masters of musk—because they sometimes mix their smellysecretions to produce a veritable bouquet of stank.
And now researchers have a better idea why.
Male lemurs sometimes use the scent glands on their wrists to mark tree branches andsaplings.
Other times, they double down, rubbing their wrists against glands on their chests to create afoul and funky fusion.
This special blend can then be smeared over objects or wiped onto their tails, which the maleswave at their rivals in a display that scientists refer to as a “stink fight.”
But why create such a custom combination?
Perhaps adding the oily exudate from the chest alters the information conveyed by the wrist.
Or maybe it acts as a kind of preservative that makes the wrist signal longer lasting.
To find out, researchers gathered secretions from a dozen ring–tailed lemurs at the Duke LemurCenter in North Carolina.
They then presented male lemurs with wooden dowels that were doused with either the wristfragrance, the chest scent, or a mixture of the two.
And they found that males spent more time sniffing the stick with the mixture, which suggeststhat the fragrant combination does contain more interesting information than the soloscents alone.
But the lemurs were even more interested in the odiferous amalgamation when it was left outto evaporate for 12 hours, licking the sticks to better access the dried volatile compounds.
That observation supports the theory that mixing secretions actually boosts their stayingpower.
The results are in the journal Royal Society Open Science.
So while a rose is a rose is a rose, the perfume of the ring–tailed lemur is a complexconcoction, the subtle meaning of which lies in the nose of the beholder.
