倾斜巷道架棚迎山角一般取巷道倾角的（）。
A、1/6－1/8
B、1/7－1/8
C、1/5－1/6
D、1/4－1/5
参考答案：A
Are you still hoping and waiting for someone somewhere to come to your rescue, wave a magic stick and immediately change your life for _________?
A．the best
B．best
C．better
D．the better
要使某图层与其下面的图层合并可按什么快捷键？（ ）
A．Ctrl＋K
B．Ctrl＋D
C．Ctrl＋E
D．Ctrl＋J
