题型:选择题 I can hardly imagine David _____ with such a boring guy for as long as 6 years.[ ]A. to work B. to be working C. working D. work 查看答案
题型:单项选择题 A1/A2型题 甲亢患者服硫脲类药物后症状减轻,而甲状腺肿大加重,机制为()A.T3、T4反馈抑制减弱B.合并甲状腺炎C.出现甲状腺功能减退D.对硫脲类耐药E.血中甲状腺刺激物增多 查看答案