19世纪上半叶的日本人曾经这样记述日本社会中封建统治阶级与商人的关系：“今世的诸侯，不论大小……都是对富商卑躬屈膝，以期能向他们借钱，并仰赖江户、京都等地的商人以维生计。”下列对这段话的理解正确的是(  )

根据短文内容及首字母提示完成短文。

    My name is John. I am 13 years old. My b ____is 1st October and I was b____ in Nanjing. I live with my f____ in Shanghai. I have a t____ brother. I am s____ and I w____ glasses. I am good at English. I like playing football. I play football in the football f____. I also like c____ games. In the evening, I do my homework carefully. My father r____ newspapers. My mother c____dinner for us. My brother reads Chinese books every day.

（Ⅰ）求证：DP∥平面EAB；

（Ⅱ）求平面EBD与平面ABC所成锐二面角大小的余弦值．