单选题
The author mentions "seeds and fruits" in line 2 as examples of
A、
the first crops cultivated by early agricultural societies
B、
foods eaten by hunters and gatherers as a secondary food source
C、
types of food that hunters and gatherers lacked in their diets
D、
the most common foods cultivated by early agricultural societies
【正确答案】
B
【答案解析】
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