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【单选题】
以下通常不具有圈层结构的自生颗粒为( )A.
B.
鲕粒
C.
核形石
D.
内碎屑
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反馈参考答案：
举一反三
【单选题】What does the man say about himself?
A.
He doesn't have a studying brain.
B.
He is afraid of examinations.
C.
He doesn't have a gift for English.
D.
He hates to be a postgraduate.
【单选题】What does the man mean?
A.
He might go to the movies when he finishes studying.
B.
He doesn't know if he concentrates on a movie.
C.
He needs to stop studying for a while.
【简答题】微生物生长的营养要素包括:水、( )、( )、( )、 ( ) 。
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