her stamps groups in her spare time is her great pleasure.——青夏教育精英家教网—

7. _______ her stamps _______ groups in her spare time is her great pleasure.　

6. Our great achievements _______ what we did in the past and do today.　

5. It is said that the invention of his will ______ the people living in this area. 　

4. He _______ the tourists and took them back to the coach.　

3. Our school ______ two main parts, the senior part and the junior one.　

2. Nothing can ______ from what you have today now.　

　　　用所给词或短语的适当形式填空。　

be made up of　take away　benefit　round up　depend on　classify...into...　promote　born　make an attempt　be based on

1. The price______ the quality.　

26．小明将一张矩形纸片沿对角线剪开，得到两张全等直角三角形纸片(如图2)，量得他们的斜边长为10cm，较小锐角为30°，再将这两张三角纸片摆成如图3的形状，使点B、F、D在同一条直线上，F为公共直角顶点。然后小明又将图(3)中的△ABF沿直线AF翻折到图(4)的位置，点B落在FD边上的B₁点，AB₁交DE于点H。

请你说明：(1)AH=DH.；(2)点H在∠AFD的角平分线上。