题目

如图，把一张长方形纸片ABCD沿对角线BD对折，使得点C落在点F处，DF交AB于E.如果EF=3，DC=9，那么∠EBF=       °. 答案：30°.. Why don’t you bring ______ to his attention that you are too busy to do it? A．thisB．whatC．thatD．it