阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。

The Twenty-four Solar Terms shows the relationships between the universe, seasons, climate and agriculture,【小题1】 is a unique creation by Chinese ancestors. In the early development of agriculture people began to explore rules of nature since agricultural 【小题2】 (produce) was highly subject to seasonal changes. As the east Asian traditional lunar calendar is a “lunisolar(日与月的)calendar”, 【小题3】 is, it’s developed according to the running and operation of the sun or the moon, it can not【小题4】 (full) reflect the circle of the sun.【小题5】, China is an agricultural society and we have to strictly know the circumstance about the sun operation. With farming completely carried 【小题6】according to the sun, our ancient ancestors added a separate calendar 【小题7】 (reflect) the sun cycle. Thus, the Twenty-four Solar Terms that can indicate the changes of seasons and climate 【小题8】 (come) into being, and it was used to guide sowing, harvest and other agricultural 【小题9】 (activity). Up to now, it 【小题10】 (function) as an essential tool to guide farming in China.