临床试验中最常见的偏倚是()
A.失访
B.霍桑效应
C.安慰剂效应
D.发表偏倚
E.错分偏倚
参考答案:B
麝的活动规律:晨昏性活动、()、生性胆怯、独居性、、视觉灵敏。
-- Lily is coming by ________plane tomorrow.
-- Let’s go to ________ airport to meet her.
A.a; a
B./; a
C.the; the
D./; the