下列哪种疾病时血中胰岛素样生长因子-Ⅰ的含量明显降低?
A. 肢端肥大症
B. 巨人症
C. 侏儒症
D. 呆小症
E. 糖尿病
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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
____Ancient Chinese learned to farm and raise livestock in the Xia Dynasty, the first dynasty of the slave society.
____Qin Shi Huang founded a centralized, unified, multi-ethnic feudal monarchy state. He unified the language, set up the prefectures and counties system, constructed the famous Grand Canal and built great palaces.
____Chinese society entered the feudal society after the establishment of the Tang Dynasty in 618AD.