题目

A group of middle school  students spent two weeks ____the jungle. A  trekking across  B  to trek across C  to trek through  D  trekking through 答案：DE是正方形ABCD内一点，且△EAB是等边三角形，则∠ADE的度数是（ ）A．70°B．72.5°C．75°D．77.5°