下列______不是面向对象程序设计方法的特点。
A．继承
B．抽象
C．多态
D．结构化
参考答案：D
I was late for class yesterday ________ there was something wrong with my bike.[ ]
A.when
B.that
C.until
D.because
对急诊室的护理管理应如何要求？
