题目

语法填空 In Chinese culture, each year is related to Chinese animal according to the 12-year cycle. 2018 is an Earth Dog Year. People born during the year of dog (believe) to take after some of the animal's characteristics, such as loyalty, patience, and reliability. Zodiac(黄道) theory also relates to Chinese elemental theory，associates the 12 animals with one of five elements :metal, wood, water, fire, and earth. The five elements (combine) with the 12 zodiac signs produce a 60-year cycle. Zodiac animals have both fixed and non-fixed elements attached them. For example, the dog (as雨后蚯蚓从土壤中爬出地面的原因是雨水填满了土壤缝隙，蚯蚓在地下得不到充足的氧气。