题目: That _____ her watch, and these _____ his books. [ ]A. is, is B. is, are C. are, are D. are, is 答案: 答案:B
题型:单项选择题 B1型题 人体实验的核心宗旨是()。A.以病人作为受试对象的试验B.以人作为受试对象的试验C.人体实验时必须要做到真正的知情同意D.选择受试者的时候需遵循的E.保障受试者身心安全 查看答案