题目

如图，正方形ABCD的边长为4，点E是AB边上一个动点，点F是CD边上一个动点，且AE＝CF，过点B作BG⊥EF于点G，连接AG，则AG长的最小值是. 答案：【1】10−2 一What do you think of Martin ? 一He is the        boy in our class．He answers many questions and has created three clubs  A．most energetic    B．liveliest     C．most active     D．most confident