题目内容

Dorsal and ventral are terms used for limbs.（）

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The main function of connective tissue are（）

A. connection
B. filling
C. support
D. secretion

Active transport is reverse concentration difference transport, which requires energy consumption and no saturation.（）

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

The cell morphology of animal body is（）

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