植物和动物细胞都具有的结构是 [ ]
A．细胞壁
B．细胞膜
C．叶绿体
D．中央大液泡
答案：B
It is said that the company in ______ charge of him is in_____ debt now.
A．the; the
B．/; /
C．/; the
D．the; /
（），是夫妻关系健康、和谐的保障。
