洋葱根尖分生区细胞中的DNA存在于( )
A:高尔基体、线粒体和细胞核
B:线粒体、叶绿体和细胞核
C:线粒体和细胞核
D:叶绿体和细胞核
(2015•广东茂名)Mr Zhang and his wife _to the party last Sunday.
下列叙述正确的是( )