软件生存周期包括软件定义、 【2】 、软件使用和维护三个阶段。
参考答案：软件开发
胎头衔接是指胎头颅骨最低点接近或达到坐骨棘水平，而进入骨盆入口的是
A．枕骨
B．顶骨
C．双顶径
D．双肩径
E．枕下前囟径
If you ________ the gold medal in the coming 2012 London Olymapic Games, you will have to train hard.[ ]
A. are going to win
B. are to win
C. are about to win
D. will win
