在孕妇和儿童身上进行的临床药理学试验属于()
A.Ⅰ期临床试验
B.Ⅱ期临床试验
C.Ⅲ期临床试验
D.Ⅳ期临床试验
E.临床前试验
参考答案:D
Frank and Mary are my mother's parents. They are my ______. [ ]
A. grandparents
B. grandfather
C. grandmother
D. uncles
脑出血的常见部位