The introduction of the twenty-four solar terms was conclusive in ancient times, and it was absorbed into taichu calendar as a supplement to the calendar in the Han Dynasty to guide farming. Twenty-four solar terms are not only a time scale promulgated by successive governments, but also a compass to guide agricultural production. In daily life, people can predict cold, warm, snowy and rainy weather. Twenty-four solar terms are part of the humanistic common sense of civil servants' provincial examination. In preparing for the exam, the review of humanistic common sense involves too much coverage and content for many candidates, and there is often a feeling that there is no way to start. In order to help you remember the test sites better, we have specially arranged it for you. Let's take a look at the 202 1 provincial high-frequency test site for cultural common sense: 24 solar terms. Come and learn.

First, the "twenty-four solar terms" core test site summary

The spring rain shakes the spring and clears the valley, and the summer is full of mountains and summers.

Autumn dew, autumn frost, little snow in winter and cold in winter.

"Twenty-four solar terms" originated in the Yellow River Basin. As early as the Spring and Autumn Period, four solar terms were set, namely, mid-spring, mid-summer, mid-autumn and mid-winter. After continuous improvement and perfection, by the Qin and Han Dynasties, the 24 solar terms had been completely established. In BC 104, taichu calendar written by Deng Ping was officially listed in the calendar.

The complete proposal of "Twenty-four solar terms" comes from the philosophical work Huai Nan Zi written by Liu An, a royal family in the Western Han Dynasty, and his disciples. This is the first time to completely record the names of the 24 solar terms and explain the determination method.

According to the law of the operation of heaven and earth, the ancients determined the starting point and ending point of the four-season cycle and divided the 24 solar terms. The trajectory of the sun in a year is divided into 24 equal parts, each of which is a "solar term", collectively called "twenty-four solar terms". Twenty-four solar terms represent twenty-four different positions of the earth in the orbit of revolution. Because it takes 365 days for the earth to go around the sun, there is a solar term every fifteen days, and each solar term represents different changes in climate, phenology and time.

Second, the reproduction of classic test sites

1. The following statement about the 24 solar terms is wrong ()

A. Rain and Grain Rain reflect the phenomenon of precipitation.

B. The beginning of spring and the vernal equinox reflect the seasonal changes.

C. Odor and clarity reflect natural phenology.

D. Xiaoman and Mangshan are related to crop maturity and harvest.

Analysis B. Twenty-four solar terms are divided into three categories. The first category reflects seasons: beginning of spring, Changchun, beginning of autumn and beginning of winter are used to represent seasons, and a year is divided into four seasons. The second category reflects the height change of the sun: vernal equinox, autumnal equinox, summer solstice and winter solstice. The third category reflects the climate characteristics: the five solar terms of slight summer heat, great summer heat, summer heat, slight cold and great cold reflect the temperature change and heat status, which are used to express the degree of cold and heat in different periods of the year; Rain, Grain Rain, light snow and heavy snow reflect the phenomenon of precipitation, indicating the time and intensity of rainfall and snowfall; On the surface, the three solar terms of white dew, cold dew and first frost reflect the phenomenon of condensation and sublimation of water vapor. When the temperature drops below zero degrees Celsius, water vapor condenses into frost. The fourth category reflects phenological phenomena: Xiaoman and Mang reflect the maturity and harvest of related crops; Sting and Qingming reflect natural phenology. The first thunder in the sky and the resurrection of underground stingers are used to predict the return of spring. Qingming reflects the warm climate and sunny weather. So, the answer to this question is B.

The above is the 202 1 provincial high-frequency test center for cultural common sense: 24 solar terms. I hope that when you memorize common sense, the 24 solar terms are known as "the fifth invention of China" in the international meteorological community, and were officially listed in the UNESCO Intangible Cultural Heritage List on June 30th, 2016. In addition to systematic study, we should pay more attention to the accumulation in daily work, life and study. The study of common sense needs constant accumulation in order to be comfortable in the examination room. Wish you success!