『新东方在线托福听力』为托福考生准备了ETS托福TPO/Official 22 Lec 1听力练习：Why does the professor mention upper, middle, and lower classes?原文题目答案解析，TPO/Official 22 Lec 1听力原文范文音频翻译。

托福TPO/Official 22 Lec 1听力原文Why does the professor mention upper, middle, and lower classes?-新东方托福官方网校手机版

旁白：听一段人类学的课堂讲解。

Narrator: Listen to part of a lecture in an anthropology class.

教授：当我们审视史前历史的时候，最大的一个问题就是为何最早的城邦会形成。

Professor: One of the big questions when we look at prehistory is why did the earliest states form.

呃，首先我们需要给“城邦”一个明确的定义。

Well, to begin we'd better define exactly what we mean when we talk about "states".

最小的、社交最少的，而且政治体系最不复杂的人类群体，我们称之为群体。

The human groups that are the smallest and have the least social and political complexity, we call bands.

最大的、社交最多的，而且政治体系最复杂的，我们称之为城邦。

The groups that are the largest and most socially and politically complex, we call states.

这里指的复杂水平是说人们群体组织发展成庞大，群体多样，人口密集的集体。

So, the level of complexity here refers to the organization of people into large, diverse groups, and densely populated communities.

而总共有四种社会组织：群体、部落、酉帮以及城邦。

And there are four levels in total: bands, tribes, chiefdoms and states.

那么再回到我起初的问题上来。

为何不继续生活在小群体中呢？

Why not just continue to live in small groups?

一种叫做环境法的理论推测人口增长是城邦的形成的主要推动力。

One theory called the environmental approach hypothesizes that the main force behind state formation was population growth.

这种理论认为集中管理对处理人口突然剧增引起的问题是至关重要的，比如紧张有限的食物供应。

It assumes that centralized management was critical to dealing with issues caused by sudden population surges, like a strain on limited food supplies.

在社会复杂度最低的范围内，为数不多居住在bands的家庭能够自给自足。

At the least complex end of the spectrum, the few families living in bands are able to meet their own basic needs.

他们通常一起打猎，寻找一切可以得到的食物，而不是驯养动物或种植庄稼。

They usually hunt together and forage whatever foods are available to them, instead of domesticating animals and planting crops.

为了更有效的捕猎到野生动物，bands通常是游牧民族，追随着一群群动物的迁徙而随遇而安。

In order to efficiently take advantage of the wild foods available, bands are often nomadic and move around following herds of animals.

这种生活方式在人口小的群体中是可行的。

This strategy is feasible when you have a small population.

而当人口很多的时候，就不可能所有人都随时起身并跟着一群野生动物四处游荡。

But when you have a large population, well, the whole population can't just get up and move to follow a wild herd of animals.

因此就需要复杂的技术来为每个人提供充足的食物。

So you need sophisticated technologies to produce enough food for everyone.

而且由于人们为资源相互竞争而引起的众多社会问题也都需要得到解决。

And there is an increase need to resolve social problems that arise as people begin to compete for resources.

为了加强食物的生产、收集、储藏及分配，你就需要一个中央的决策及一个决策者。

To manage intensified food production, to collect, store and distribute food, you need centralized decision-making, centralized decision-makers.

It's the same thing when it comes to maintaining social order.

你需要创建并有效的实施一项正式的法典。

You need to create and efficiently enforce a formal legal code.

那么有个中央权力机构来负责就很说得通了，对吗？

It makes sense to have a centralized authority in charge of that, right?

定义上看，城邦至少有三个社会等级。

By definition, states had at least three social levels.

通常是上层由领导阶级构成，中层管理人员及商人构成，下层则由农作物生产者及农业劳动者构成。

Usually, an upper class of rulers, a middleclass comprised of managers and merchants, and a lower class of crop producers and agricultural laborers.

环境法推测城邦是在特定的环境条件中出现的，这样的环境可能是存在严重的人口问题或者是农业用地短缺。

The environmental approach hypothesizes that states appear in certain environmental settings, settings which have a severe population problem or a shortage of agricultural land.

但并不是每个人都同意这个观点。

这个理论肯定是存在一些弊病的。

如，在中美洲温暖的低地及埃及的尼罗河畔就都有城邦的出现。

For example, states have developed in places like the mild lowlands of Mesoamerica and in Egypt's Nile River Valley.

这两个地方有广阔肥沃的土地，并不是农业用地匮乏。

Both places had vast areas of fertile farmland, no shortage of agricultural land.

呃，有一些早期城邦是在没有人口突然加剧的情况下产生的。

Well, there were some early states that formed where there wasn't any sudden population increase.

因此，看来这些都是对环境法的有力的批判。

So it seems that these are valid criticisms of the environmental approach.

According to the professor, what are two typical characteristics of a band?

What does the professor say is a characteristic feature of states?

What reason for prehistoric social problems does the professor mention?

Why does the professor mention upper, middle, and lower classes?

What is the professor's opinion about the environmental approach?

Narrator: Listen to part of a lecture in an anthropology class. 
Professor: 
One of the big questions when we look at prehistory is why did the earliest states form? Well, to begin we’d better define exactly what we mean when we talk about states. The human groups that are the smallest and have the least social and political complexity, we call bands. The groups that are the largest and most socially and politically complex, we call states. So, the level of complexity here refers to the organization of people into large, diverse groups, and densely populated communities. And there are four levels in total: bands, tribes, chiefdoms and states. But, but back to my original question. Why did early states form? Why not just continue to live in small groups? Why become more complex? 
Professor: 
One of the big questions when we look at prehistory is why did the earliest states form? Well, to begin we’d better define exactly what we mean when we talk about states. The human groups that are the smallest and have the least social and political complexity, we call bands. The groups that are the largest and most socially and politically complex, we call states. So, the level of complexity here refers to the organization of people into large, diverse groups, and densely populated communities. And there are four levels in total: bands, tribes, chiefdoms and states. But, but back to my original question. Why did early states form? Why not just continue to live in small groups? Why become more complex? 
One theory called the environmental approach hypothesizes that the main force behind state formation was population growth. It assumes that centralized management was critical to dealing with issues caused by sudden population surges, like a strain on limited food supplies. At the least complex end of the spectrum, the few families living in bands are able to meet their own basic needs. They usually hunt together and forage whatever foods are available to them, instead of domesticating animals and planting crops. 
In order to efficiently take advantage of the wild foods available, bands are often nomadic and move around following herds of animals. This strategy is feasible when you have a small population. But when you have a large population, well, the whole population can’t just get up and move to follow a wild herd of animals. So you need sophisticated technologies to produce enough food for everyone. And there is an increase need to resolve social problems that arise as people begin to compete for resources. To manage intensified food production, to collect, store and distribute food, you need centralized decision-making, centralized decision-makers. 
In order to efficiently take advantage of the wild foods available, bands are often nomadic and move around following herds of animals. This strategy is feasible when you have a small population. But when you have a large population, well, the whole population can’t just get up and move to follow a wild herd of animals. So you need sophisticated technologies to produce enough food for everyone. And there is an increase need to resolve social problems that arise as people begin to compete for resources. To manage intensified food production, to collect, store and distribute food, you need centralized decision-making, centralized decision-makers. 
It’s the same thing when it comes to maintaining social order. You need to create and efficiently enforce a formal legal code. It makes sense to have a centralized authority in charge of that, right? So a hierarchy forms. By definition, states had at least three social levels. Usually, an upper class of rulers, a middleclass comprised of managers and merchants, and a lower class of crop producers and agricultural laborers. 
The environmental approach hypothesizes that states appear in certain environmental settings, settings which have a severe population problem or a shortage of agricultural land. But not everyone agrees with the theory. It definitely has some weaknesses. For example, states have developed in places like the mild lowlands of Mesoamerica and in Egypt’s Nile River 
Valley. Both places had vast areas of fertile farmland, no shortage of agricultural land. And what about population increase? Well, there were some early states that formed where there wasn’t any sudden population increase. So it seems that these are valid criticisms of the environmental approach.