It was some time we realized the truth. [ ]
A.when
B.until
C.since
D.before
答案:D
胆胀若伴有胆石形成,宜加用()
A.鸡内金
B.滑石
C.金钱草
D.海金沙
E.穿山甲
关闭显示器的电源,将使正在运行的程序立即停止运行。 ( )