题目

Dear Tom: I am glad that you are coming to Handan as an exchange student. You 61._______(ask) many questions about the Dragon Boat Festival in your letter, and now let me tell you something about it. The Dragon Boat Festival, also called the Duanwu Festival, is celebrated 62. ________ the fifth day of the fifth month according to the Chinese calendar. People always eat the rice dumpling, Zongzi, and watch dragon boat races 63. ________ (celebrate) it.    The rice dumpling is made of glutinous(粘性的) rice, meat and so on. You can eat different 64.________(kind) of rice dumpling 如图，AD为△ABC的中线，BE为△ABD的中线． （1）∠ABE=15°，∠BAD=40°，求∠BED的度数； （2）作△BED的边BD边上的高； （3）若△ABC的面积为40，BD=5，则△BDE 中BD边上的高为多少？