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。悉尼文波雅思PTE培训学校专门为澳洲，尤其是悉尼、墨尔本的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：
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。
If you’re lost, you need a map and a compass.
The map pinpoints where you are, and the compass orients you in the right direction.
Migratory birds, on the other hand, can traverse entire hemispheres and end up just a couple miles from where they bred last year, using their senses alone.
Their compass is the Sun, the stars and the Earth’s magnetic field.
But their map is a little more mysterious.
One theory goes that they use olfactory cues—how a place smells.
Another is that they rely on their sense of magnetism.
Researchers in Russia investigated the map issue in a past study by capturing Eurasian reed warblers on the Baltic Sea as they flew northeast towards their breeding grounds near Saint Petersburg.
They moved the birds 600 miles east, near Moscow.
And the birds just reoriented themselves to the northwest—correctly determining their new position.
Now the same scientists have repeated that experiment—only this time, they didn’t move the birds at all.
They just put them in cages that simulated the magnetic field of Moscow, while still allowing the birds to experience the sun, stars and smells of the Baltic.
Once again, the birds re–oriented themselves to the northwest
suggesting that the magnetic field alone—regardless of smells or other cues, is enough to alter the birds’ mental map.
The study is in the journal Current Biology.
And if you’re envious of that sixth sense—keep in mind that since the Earth’s magnetic field fluctuates, the researchers say magnetic route–finding is best for crude navigation.
Meaning for door–to–door directions—you’re still better off with your GPS.
词语解释：
traverse： [trəˈvɜ:s] v.穿过、横贯
hemispheres： [ˈhemɪsfɪr ] n.半球
olfactory cues： [ɒlˈfæktəri] adj.嗅觉的
magnetism： [ˈmægnətɪzəm] n.吸引力
fluctuates： [ˈflʌktʃueɪt] v.波动、涨落
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