『新东方在线托福口语』为托福考生准备了ETS托福TPO/Official 56 Task 3口语练习：Task Partitioning
Different species of insects have diff原文题目答案解析，TPO/Official 56 Task 3口语原文范文音频翻译。

托福TPO/Official 56 Task 3口语原文独立/综合口语题目答案解析-范文音频翻译-新东方托福官方网校手机版

旁白：现在，请听生物课上的一段讲座。

NARRATOR: Now listen to two students discussing the letter.

教授：现在，咱们来看个关于这种切树叶的蚂蚁的例子。他们需要往巢里搬运食物 – 也就是叶子 – 的时候，就会用到这个系统。

MALE PROFESSOR: OK, now a good example of this is leaf-cutter ants—they use this kind of system when they need to get food—leaves—to their nest.

他们会这样做：他们会分成三组，每组在搬运食物回巢的过程中有不同的分工。

What happens is that they’re separated into three different groups, and each group has a different part in the process of transporting food back to the nest.

第一组，他们的工作就是爬到树上、把树叶切成碎片。但它们不会直接把叶片运回树下，而是直接扔掉、让树叶自然掉落到地上。

So the first group, their job is to climb up a tree and start cutting off pieces of leaves. But instead of carrying the leaf pieces back down the tree, the ants just let go of the pieces so they fall down to the ground below.

一段时间之后，这些掉落的叶片就会聚集在树下。

And after a while all these leaf pieces collect in a pile at the bottom of the tree.

这时在旁边等待的第二组蚂蚁就会来帮忙了。

Then there’s a second group of ants waiting to help.

第二组蚂蚁的任务是把叶子切得更小、更好处理、便于搬运。

This second group’s job is to cut the leaves down into smaller, more manageable pieces that are easier for them to carry.

然后它们把叶片搬到树和巢的中界地。

Then they take these smaller pieces of leaves to a place that’s partway back to the nest.

最后，第三组蚂蚁接手工作。他们的任务是把叶片从小路运到巢里。

Finally, the last group of ants takes over and they have the job of actually bringing the leaf pieces back from the trail to the nest.

这种方式很高效，因为每只蚂蚁都有个特定的工作要完成，这比所有蚂蚁各自独立完成所有工作要快速的多。另外，因为蚂蚁不需要一直在树上爬上爬下的，它们都能正常干活、不会很快就耗尽体力。

The system works well—since each ant has a specific job to do, the work gets done faster than if they were all working independently... and, since none of the ants has to keep climbing up and down a tree, they can all do their jobs without tiring out too soon.

Task Partitioning
Different species of insects have different ways of organizing the essential tasks that need to be completed in order for them to survive. One way of accomplishing this process is through&nbsp;task partitioning. Insect groups that use this method divide, or partition, their work into several different stages that are ordered and performed in a fixed sequence by different groups of workers. An important benefit of this technique is increased efficiency, since the workers performing each task are specialized, which saves time and energy. &nbsp;
 <img src="/upload/ti/sardine/2598000-2599000/2598377/d126e2368fc64d8a8863053d47c14c1e.png"> &nbsp;&nbsp;
Explain how the example of leaf-cutter ants illustrates the concept of task partitioning. &nbsp;
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