题型:填空题 It took me some time to ____ what I had heard. [ ]A. make sense B. digest C. scene D. look into 查看答案
题型:填空题 在病例-对照研究中,调查对象应是()。A.病例为可疑患者,对照为未患某病者B.病例为确诊患者,对照为可疑患者C.病例为确诊患者,对照也为患者D.病例为确诊患某病的人,而对照应是未患某病的人E.病例和对照都未被确定患某病 查看答案