题目内容

化学结构与生长激素近似,并具有较弱生长激素作用的激素是

A. 催产素
B. 催乳素
C. 促甲状腺激素
D. 促肾上腺皮质激素
E. 胰岛素

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____Ancient Chinese learned to farm and raise livestock in the Xia Dynasty, the first dynasty of the slave society.

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____Chinese society entered the feudal society after the establishment of the Tang Dynasty in 618AD.

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