下列属于网络课程组成的是（）。
A.教学课件
B.教学目标
C.教学内容
D.网络教学支撑环境
参考答案：C, D
魏氏血沉法成年女性的参考范围（mm／h）为（）
A.0～5
B.0～10
C.0～15
D.0～20
E.5～15
Which of the following explanations regarding the high number of Caesarean operations is NOT true
A．Some mothers have passed the best age for a natural delivery.
B．Some mothers have fertility problems.
C．Some mothers favor the operations of this type.
D．Some mothers have had surgical operations on their fallopian tubes.
