问答题

粒状集合体是由许多粒状单体任意集合而成，是一种集合体形态。

答案：显晶

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多项选择题

"Urban mineral" demonstration bases are mainly built in three key regions. They are _____.
A、the Central Region
B、Pearl River Delta Region
C、Circum-Bohai Sea Region
D、Yangtze River Delta Region

凡事露才遭人忌（打一成语）

答案：谜底：概莫能外