线粒体和叶绿体都具有环状DNA及自身转录RNA与转译蛋白质的体系。
查看答案
线粒体的DNA以半保留的方式进行自我复制。
A. 对
B. 错
Listat least 4 reasons for stories to be used in the primary school English classroom.
Are there any problems in using stories in the classroom?
Which activities can be used to help children practice with the language after storytelling?
A. sequence the events of the story
B. make a mini-book
C. play performance
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