题型:选择题 In the past few years, research has suggested that Vitamin D may increase the level of serotonin(血清素), one of the key nurotransmitters influencing our mood, and ________it helps to relieve mood disorders. A.that B.whereC.whatD.which 查看答案
题型:单项选择题 A1/A2型题 5岁患儿,无明显诱因出现左髋疼痛伴有跛行3个月,X线检查显示左侧股骨头干骺端和骺板交界处出现囊变表现,骨骺扁平,诊断考虑为()A.发育性髋关节异常B.髋关节结核C.髋关节滑膜炎D.股骨头缺血性坏死E.以上都不是 查看答案