排舞是全世界同步的舞蹈，每一支舞曲对应独特的、完整性节奏和风格的舞步，在现有舞曲中，排舞的舞步无一雷同。（）
参考答案：对
The sign on the wall means 'No ', we shouldn't here. [ ]
A. smoking; smoke
B. smoke; smoking
C. smoking; smoking
D. smoke; smoke
抛物线y2＝8x的焦点到准线的距离是________．
