题目

In the kitchen of my mother’s houses there has always been a wooden stand（木架）with a small notepad（记事本）and a hole for a pencil. I’m looking for paper on which to note down the name of a book I am recommending to my mother. Over forty years since my earliest memories of the kitchen pad and pencil, five houses later, the current paper and pencil look the same as they always did. Surely it can’t be the same pencil? The pad is more modern, but the wooden stand is definitely the original one. “I’m just amazed you still have the same stand for holding the pad and pencil af如图所示，△ABC中，∠B：∠C=3：4，FD⊥BC，DE⊥AB，且∠AFD=146°，求∠EDF的度数．