托福听力背景知识学习之 考题体现
在各种托福考试的参考书中都出现过关于植物学的考题，如官方真题Official中有一篇讲nightcap oak的文章，从整体上介绍了这种特殊植物的生长繁殖特点 。比较有特色的是Delta中出现了介绍两种植物的生长激素(hormone)：乙烯(ethylene)和植物生长素(auxin) 。话题的切入点很小，中心名词也非常陌生，但只要能根据所描述解释的内容和实例，不难理解文章所要表达的主旨，考生甚至能把实际生活与之联系 。
托福听力备考既要提升听力能力也要扩充一些学科相关的背景知识，因为听力背景知识可以帮助大家了解相关学科知识，提升对材料的理解力，有利于大家把握材料重点，做对题目 。
托福听力练习对照文本
There's an art exhibition here on campus which ties in well with the discussions we're had about folk art.
校园这儿有一个艺术展览同我们讨论过的民间艺术结合的很好 。
It's an exhibition of wildlife art calendars from about a hundred years ago.
这是来自大约一百年前的野生生物的艺术日历的一个展览 。
Like most other folk art, the calendar pictures were not considered to be art in their own day.
像大多数其他民间艺术一样，日历的图画在他们自己的时代并没有被认为是艺术 。
People just thought of them as a way of decorating a practical object.
人们仅仅把它们当做装饰一个实际的物体的方式 。
In fact, the calendar pictures were originally printed as advertising for various companies that made hunting or fishing products, like guns or fishing rods.
事实上，日历图画本来是当做不同的公司制作的狩猎或钓鱼产品，比如枪或者鱼竿的广告来印刷的 。
The calendars were handed out free to customers to thank them for their business.
这些日历是免费发给顾客的，为了他们(公司)的生意来感谢他们(顾客) 。
Most people just hung the calendars on their walls where the pictures faded in the sun, and then tore the picture off the calendar as each month passed.
大多数人仅仅是把日历挂在他们的墙上，在那里图画会在阳光中褪色，然后当每个月过去时，把图画从日历上撕下来 。
As a result, collectors today place a lot of value on calendars that are complete and in good condition.
结果，收藏家给那些完整并且情况良好的日历估定了很多的价值 。
Even though the people who used the calendars didn't regard them as art, the original paintings the prints were made from were often of good quality.
虽然使用日历的人没有认为它们是艺术，被制成印刷品的原画通常是质量很好的 。
In fact, many famous wildlife painters created calendar art at some point in their lives.
事实上，许多著名的野生生物画家在他们人生中的某一时刻创造了日历艺术 。
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