Since ancient times,eating_______________has been a tradition at this festival.
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Both “Yuanxiao” and “Tangyuan”sound familiar with “Tuanyuan”,sybolize _________.
The Chinese nation values the dragon, and considers it as________ .
_________is a later-added activity that appeared in Song Dynasty.
绝大多数植物的病害是由()引起的。
A. 真菌
B. 细菌
C. 病毒
D. 线虫