左沐熙

各位同学们，为了督促帮助大家持续提升英语能力，培君老师们特意给大家准备了托福每日一包。每天覆盖听说读写内容，坚持完成两周以上，就能见到自己的英语能力不断上涨哟。



1.听写包答案：

So for example, when ants leave the nest, they deposit a pheromone trail along the route they take.

If they find food, they return to the nest on the same path, and the pheromone trail gets stronger, it’s doubled in strength.
Because an ant that took a shorter path returns first, its pheromone trail is stronger and other ants will follow it according to rule two.
And as more ants travel that path the pheromone trail gets even stronger.
So what’s happening here? Each ant follows two very basic rules.
And each ant acts on information it finds in its immediate local environment.
And it’s important to note, even though none of the individual ants is aware of the bigger plan,
they collectively choose the shortest path between the nest and the food source, because it’s the most reinforced path.
By the way, a few you have asked me about the relevance of what we are studying to everyday life.
And swarm intelligence offers several good examples of how concepts in biology can be applied to other fields.
举个例子说，当蚂蚁离开巢穴时，它们会在自己走着的路线上留下一条费洛蒙痕迹。
如果它们找到了食物，它们回蚁巢时会走同一条路，所以这条路上的费洛蒙会变得更强烈，因为强度翻番了。
因为选择了短一些的路的蚂蚁会先回到蚁巢，它的费洛蒙痕迹更强烈，而根据第二条规则，其他的蚂蚁也会走这条路。
随着越来越多的蚂蚁在这条路上走过，那里的费洛蒙痕迹就会变得更强。
那么这里会发生什么呢？每只蚂蚁都会遵从这两条非常基本的规则。
而且每只蚂蚁会根据它在当时的环境中发现的信息行动。
有一个很重要的事情要注意，虽然没有任何一只蚂蚁意识到了更大的计划，
但它们集体选择了蚁巢和食物之间最短的路，因为这是痕迹最强的路。
顺便提一下，你们中有些人问过我，我们正在学习的内容和日常生活有什么联系。
群体智能提供了好几个很好的例子，说明了生物学中的概念如何能被用于其他领域。

2.阅读包答案：

其中也蕴涵一个美学原则：用于雕刻的媒介物有一定的美和富于表现力的特性，雕刻家必须使他们自己的审美感与这些特性融为和谐的—体。

3.写作包答案：

China attaches increasing importance to public libraries and encourages people to make full use of them. The newly released statistics indicate that the number of public libraries in China is on an increase year by year. Many libraries have created a quieter and more comfortable environment for readers through renovation and expansion. Not only do large-scale public libraries provide a wide range of reference materials，but they also regularly hold lectures, exhibitions and other activities. In recent years, there have also been many digital libraries, saving the space needed to store books. In addition, some libraries have introduced self-service systems, which make it more convenient for readers to borrow and return books, and further meet the needs of readers.