题目内容

Nerve tissue is mainly composed of nerve cells and glial cells.()

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The cell morphology of animal body is()

A. columnar
B. circular
C. fusiform
D. star

The liver is a tubular organ.()

Metaplasia epithelium distributed in()

A. ureter
B. trachea
C. intestines
D. bladder

The esophagus is a substantial organ.()

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