第19题: [单项选择]If the distribution of a construction is functionally equivalent to that of one or more of its constituents, the construction is called ______. A. exocentric construction B. endocentric construction C. immediate construction D. contributive construction 参考答案:B
第23题: [单项选择]下列哪项不符合病例对照研究的定义和内涵 A. 选择患有某病和未患有某病的人群为研究对象 B. 调查病例组与对照组既往暴露于某个或某些危险因素的情况 C. 分析相对危险度、特异危险度和暴露人群等指标 D. 探讨病例组与对照组之间对某些因素暴露的差别 E. 概括和检验病因假说 参考答案:C