题目内容
（ ）The upper utensil has holes at the bottom and is placed on top of the tripod, kettle, etc. It is used for steaming food.
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Starting from （ ）, China's diet has begun to be distinguished from the rest of the world.
During the Spring and Autumn period and the Warring States period, the characteristics of Chinese diet are considered as "the combination of food and politics", "diet can reflect politics". Therefore, someone believed that in the Zhou Dynasty, people of different grades ate with different eating utensils,( ).
mentioned: when a person is ill, （ ）, which is the original theory of dietotherapy.
At present, it is believed that rice was first planted by ancestors in the lower reaches of the Yangtze River, which is located in ( ).
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