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。
This is Scientific American — 60-Second Science. I’m Steve Mirsky.
Got a minute?
Medical marijuana is now available in 28 states. But a big obstacle to research on marijuana as medicine is that it’s listed by the federal government on what’s called Schedule I.
Assignment to Schedule I means that the Food and Drug Administration does not recognize a legitimate medical purpose to a substance.
At a session on medical marijuana at the annual meeting of the American Association for the Advancement of Science on February 19th, I asked researcher Ryan Vandrey, of the Johns Hopkins University School of Medicine, about getting marijuana off of the list of Schedule I substances.
RV: “Well, it can’t come off of Schedule I to a different schedule until the traditional drug development work has been done, and I don’t think the traditional drug development work really can be done while it’s Schedule I. It just makes large Phase III trials in hospital-based programs near impossible.”
SM: “So it’s a catch-22.”
RV: “It’s a catch-22. So I think the only way to really get around that is kinda two paths. One, you just unscheduled it completely. Alcohol is not scheduled, for example, so that’s the pathway that some of the states have gone, just making it available. Or treating it as like a botanical, herbal product. The other way would be to kinda wait until we get more targeted, specific products. So not whole plant cannabis, but maybe more specific formulations with specific cannabinoid profiles, would be the other way.”
SM: “Your life would be easier with it off?”
RV: “Oh, absolutely. [laughs] Without a doubt. And just to clarify, the limitations that we have in doing research is that we are limited to doing research with products that are available through the federal drug supply program. They have quite a bit, but they don’t have everything. And then the limitation is even using their product we have to go through extra levels of regulatory scrutiny and experience substantial delays in doing our research.”
Thanks for the minute for Scientific American — 60-Second Science Science. I’m Steve Mirsky.
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