What is three people working together, three people working together ?

The Xia Dynasty was founded on agriculture, and the grain output was increased, and the grain was used to make wine at that time, and there was a legend of Shaokang "making rice wine", and there were more unearthed utensils and wine vessels, which showed that the quantity of grain was relatively abundant.

Agriculture was the main sector of social production in the Shang Dynasty and reached a high level. The agricultural tools are mainly plows, and the common farming method is co-farming, that is, three people work together, and the farmland management technology has also been improved. Bronze farm tools have been used in agricultural production and are of great significance to improve production efficiency, but there are not many of them.

The farmland is a square field that has been regulated, regularized, well cultivated and equipped with irrigation ditches, that is, the later well field. Forest fruits, vegetables, sericulture production, and animal husbandry have also developed greatly.

The well field system was the basic land system of the Western Zhou Dynasty. Under this land system, agriculture in the Western Zhou Dynasty developed greatly. There are more types of agricultural tools, but they are mainly made of stone, wood, bone and mussels, and there are fewer bronze agricultural tools.

The farming method prevails in coupling tillage, and two people work together to plough. This is a step forward in farming technology. The Zhou people also systematically practiced fallow crop rotation, knew how to cultivate intensively, and could also use green manure and compost to apply artificial irrigation.

Weekly crops have increased in variety and yield.

As an important part of the social economy, agriculture is indispensable for providing the material foundation for human life.

Tell about the situation of collective labor in the Shang and Zhou dynasties in China. He was born on the basis of the state ownership of land, which according to high school textbooks is the so-called slavery of a slave society.

DA is the farming method of primitive societies; B and C appeared in the Spring and Autumn Period and the Warring States Period. The oracle bone inscription given in the title is a reflection of the collective farming of the Shang Dynasty.

B test question analysis: This question tests the ability to call the knowledge learned, "Anyang Yinxu's ox bone inscription" belongs to the oracle bone script, it reflects the situation of agricultural production in the Shang Dynasty, the Shang Dynasty was a slave production relationship, the farming method was collective cooperation, and the "people" were mostly slaves, so AD interpretation was correct and excluded; The small-scale peasant economy arose in the Spring and Autumn Period and the Warring States Period, which is inconsistent with the record of the inscription on the oracle bone inscription, so item b is correct; From the information of the inscription "(king) ordered the people", it can be seen that the ruler attached great importance to agricultural production, so item c is excluded.

It represents the transition from the Neolithic Age to the Bronze Age, which has a progressive role in agriculture. From stone tools to bronze work, increased labor productivity. And ancient China was mainly an agricultural country, which is of far-reaching significance!

D. Question Analysis: This question tests the ability to interpret the material accurately. Analysis of the question stem shows that the understanding of the word "協" is the key to solving this question, and it can be inferred from the "three plows and common farming" in the question stem that the expression is in line with the topic.

The material is mainly an elaboration of the farming method of the well field system, so it is correct. In connection with the knowledge learned, the "king" in the materials refers to the king of Shang at that time, and he ordered everyone to "cooperate with the fields", which can be explained correctly. Therefore, choose D.

Coupling, five inches for the wide, two for the coupling.

Fuxi three strange things are dry. The three couplings are called Kun.

Coupled tillage refers to two people ploughing together. Later, it also referred to farming or farming.

Coupled tillage refers to two people ploughing together. Later, it also referred to farming or farming.

Wang Ming's daily sleep.

1. Because a piece of land has 5 hectares, it is ploughed with 3 tractors and finished in hours.

So three tractors plough area in one hour = 5

2. It takes time = hours to cultivate hectares of land.

Set each tractor to plough x hectares per hour.

then 5=x=ha.

It takes Y hours to set up another hectare of land.

then y = hectares.