All cells have mitochondria.（）
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动态资料的获取方法（）
A. 社会实践
B. 专业实习
C. 生涯人物访谈
D. 网络检索
The speed of myelinated nerve transmission is faster than that of unmyelinated nerve.（）
Nerve cells are long and have many projections that can conduct impulses.（）
Dermis belongs to dense connective tissue.（）
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