与植物细胞渗透吸水密切相关的细胞器是（） A.线粒体 B.叶绿体

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问题单项选择题

与植物细胞渗透吸水密切相关的细胞器是（）

A.线粒体

B.叶绿体

C.核糖体

D.液泡

答案

参考答案：D

选择题

--- Did you find your book last night?

--- Yes, I finally managed __________ the book I was looking for.

A．to find

B．finding

C．to found

D．founding

选择题

Mr. Smith graduated from college at the age of 23, and ___________ he has been working as a teacher in a middle school.

A．after that

B．from then on

C．from then

D．since then