【名词&注释】
暂时性(temporary)、科举制(imperial examination system)、分封制(enfeoffment)、特发性生长激素缺乏症(idiopathic growth hormone deficiency)、.遗传性、郡县制(the system of prefectures and counties)、单纯性生长激素缺乏症(isolated growth hormone deficiency)
[单选题]由于GH1基因缺乏的为()
A. A.特发性生长激素缺乏症B.器质性生长激素缺乏症C.暂时性生长激素缺乏症D.遗传性生长激素缺乏症E.单纯性生长激素缺乏症(isolated growth hormone deficiency)