托福口语：TPO27Task4题目文本及答案实例解析

托福考试备考过程中所用的最多的而且是必须使用的材料就是TPO，口语在托福考试中是比较难取得高分的，为了帮助考生在托福口语考试中取得理想的成绩，南京新航道将对以实例来分析托福口语TPO，如对题目的份，答题思路的问题以及范文的分析，内容如下，考生可做参考。

托福口语TPO27task4题目 Reading Part:

Swarm Intelligence

Some insect species live in large groups, or “swarms.” Such swarms typically include several thousand individual insects. Living in swarms allows these insects to accomplish complex tasks together through complex behaviors. The behavior of the insects as a group demonstrates a greater level of complexity than the behavior of individual group member s. This complex group behavior is called swarm intelligence. With swam intelligence, each insect performs a simple instinctual behavior that is repeated by other individuals that results in a complex behavior. Insect swarms are able to accomplish tasks that individual insects would not be able to achieve.

托福口语TPO27task4题目 Listening Part:

Now listen to a lecture on this topic in a biology class.

(male professor)

OK, we can see a great example of this with ants. Ants live in large groups called colonies. They normally move together to get to food sources. And sometimes when the ants are moving toward food source, they’ll encounter, find an obstacle in their path. So, for instance, let’s say a large number of ants are walking on a tree toward some food on a branch. But when they reach the end of the branch they are walking on, there’s a wide space between that branch and the next one, the branch with the food on it. Now, none of these ants alone can cross this wide space to get to the other branch with the food. So, how did they solve this problem?

Here’s how: one ant walks forward until it reaches the end of the branch and then automatically holds onto the branch with its back legs. Then it stretches its body forward into the open space. Now, this comes naturally to ants and it’s a simple action. So then the next ant walks to the end of the branch and right across the first ant’s body. Then it holds onto the first ant and then it stretches its body out into the open space, just a little bit closer to the branch with the food on it.

Then, one after another, other ants do the same thing until enough ants connect together to form a bridge between the two branches. Pretty amazing, huh? The connected ants hold this position allowing the rest of the ants in the group to cross over this bridge of ants to reach the food.

托福口语TPO27task4题目 Question:

Explain how the example from the lecture illustrates the concept of swarm intelligence.

托福口语TPO27task4答案解析：

抽象概念：

Swarm intelligence—group demonstrate greater complexity than the behavior of individual member.

例子：

1.Ants in search of food

2,Wide space between the two branches

3.A single ant can’t cross over the space

4.The group of ants work together

5.Reach the food

托福口语TPO27task4范文：

Swarm intelligence is a phenomenon that insects as a group will demonstrate greater complexity than the behavior of an individual member. The result is they may perform some complex tasks that an individual insect can’t complete. Just like the example of ants.When a large group of ants walk on a tree in search of some food, they find that there's a wide space between the tree and the food. Any single ant alone can't cross the space. Therefore, what they do is that one ant walks forward to the end of the branch and holds onto the branch, and then it stretches its body forward so that the next ant can walk across it. The next ant does the same thing. Then one after another, they form a bridge so that the rest of the ants can cross over to reach the food. So this is how swarm intelligence works.

南京新航道学校提供专业的雅思培训、托福培训、GRE培训、SAT培训、ACT培训、剑桥青少英语培训等，帮助广大学子“用英语点亮人生”。