"The white dew is early, the cold dew is late, and the autumn equinox is the time to plant wheat." This proverb illustrates the important role of solar terms in guiding agricultural production. China

"The white dew is early, the cold dew is late, and the autumn equinox is the time to plant wheat." This proverb illustrates the important role of solar terms in guiding agricultural production. China measured 24 knots a year. D

Test analysis: This question examines students' understanding of the culture of the Warring States period. According to what they have learned, in the Warring States period, in order to arrange agricultural production, people set 24 solar terms a year, which is a great achievement in the calendar. Choose d for this topic.

Comments: This question is less difficult. The students' understanding of astronomical calendar in the Warring States period was investigated. The medical achievements in astronomy and calendar in the Warring States Period were outstanding, such as the earliest record of Halley's comet, Bian Que's four diagnoses of sight, hearing and questioning, and music and literature in the Warring States Period.