首过效应常发生于哪种给药方式（）
A.静脉
B.吸入
C.肌注
D.口服
E.直肠给药
参考答案：D
解析：本题考查首过消除的定义。
The procedures(程序) of operating a computer have been ______ several times, the results
of which have made it much easier _______. [ ]
A. cut down; to operate
B. simplified; to be operated
C. reduced; to be operated
D. simplified; to operate
行为目标在课程领域的确立始于（）
A.博比特
B.泰勒
C.布卢姆
D.梅杰
