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：
New Moms May Need New Shoes
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。
Women might expect to need new clothes after giving birth. But a bigger pair of shoes? Well, yeah. Because pregnancy can actually lengthen and widen a woman’s feet. That’s according to a study in the American Journal of Physical Medicine and Rehabilitation that’s probably not a surprise to a lot of women. [Neil A. Segal et al., Pregnancy Leads to Lasting Changes in Foot Structure]
Neil Segal, a rehab doc at the University of Iowa, heard that some local women had to don larger shoes after pregnancy. So he and colleagues measured the feet of 49 women during their first trimester and again five months after childbirth. Indeed, nearly half the women went up a shoe size after childbirth, to accommodate their longer, flatter feet. And multiple pregnancies may add to that effect, Segal says.
Pregnant women produce a hormone called “relaxin,” which makes the pelvis more flexible. That’s good for childbirth. But the hormone can affect joints and ligaments elsewhere, like in the foot. Adding pregnancy weight to that flexibility can lead to permanent flattening of the foot’s arch—associated with knee and hip pain in older women. Segal’s now investigating whether custom shoe inserts can protect women against that risk, and help get motherhood off on the right foot.