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【单选题】
下列有关细胞结构的叙述，正确的是 [ ]A.
叶绿体和细胞壁都只存在于植物细胞中
B.
细胞核和线粒体都是由双层膜包围的细胞器
C.
内质网和中心粒只共存于动物细胞中
D.
细胞膜和核糖体是细胞与细胞共有的结构
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