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：
Noisy Ships Creep Out Crabs
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。
A relaxing day at the beach. Then suddenly the peace is shattered—by the sound of ships. It can sour your mood. Now a study in the journalBiology Letters finds that noisy ships make crabs crabby, too. [Matthew A. Wale, Stephen D. Simpson and Andrew N. Radford, Size-dependent physiological responses of shore crabs to single and repeated playback of ship noise]
Researchers exposed different-sized shore crabs to either ship noise or ambient harbor noise. The crabs that contended with the annoying ship sounds had higher metabolic rates than did their companions, an indicator of stress. And the larger crabs were put out the most.
Stressed crabs burn calories faster, which can stunt their growth in fisheries. Stressed wild crabs with increased appetites might need to travel to expand their feeding grounds, which raises their risk of running into predators.
The research suggests that crabs aren’t the only sea-dwelling species peeved by the noise, either. Companies are exploring ways to design quieter ships, in the hope of offering crabs and other marine life some peace and quiet.