A、
The five-elements theory relates to concepts that were developed over time in the daily life of ancient Chinese.
B、
The five elements are water, wood, soil, fire and metal.
C、
The theory holds that these five elements are the five base materials which make up
all the things in the natural world.
D、Wood refers to the category of things that have the nature of soil and land.
喵查答案：Wood refers to the category of things that have the nature of soil and land.
