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，练习记笔记技巧和复述。
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。
This is Scientific American — 60-Second Science. I’m Steve Mirsky.
Got a minute?
“We have increasing doubts about this evidence, but we don’t feel yet
that we have the scientific knowledge and basis to exclude it altogether.” Jed Rakoff, United States District Judge for the Southern District of New York. He spoke about forensic evidence—and the need for it to actually be based in science—at the annual meeting of the American Association for the Advancement of Science in Boston on February 18th.
In 2009 the National Academy of Sciences issued a report critical of a lot of
the forensic evidence in the courtroom.
“Most fundamentally…the report said that what was really lacking was testing and research. And
thus they questioned whether any of this could be called science and they
also questioned whether it was really that accurate…
But forensic evidence is still widely admitted, even when the science behind it
may be lacking.
I think courts continue, despite their doubts, to admit this evidence…and that is still the feeling…that, eh, it’s still better than nothing, it’s still useful evidence, it has some
degree of objectivity that’s not present in much lay testimony. And therefore it is useful.
The problem of course is it comes heralded as science, and that gives it a weight
that is probably disproportionate.
I had a case, this was before the National Academy report, but it’s sort of
illustrative of what I’m talking about…United States versus Glynn. In that case, the government put on a tool-mark expert to testify that the markings on the shell that had been found
at the scene of the crime matched the markings inside the barrel of the gun that had been found
under the defendant’s bed…and I asked him, for example, what’s your error rate and what’s the error rate of this methodology that you’re using. And he said zero. And I said zero?
And he said yes. And I said how can it be zero. And he said well, in every case I’ve testified,
the guy’s been convicted.”
Thanks for the minute for Scientific American — 60-Second Science Science. I’m Steve Mirsky.