题目

With the world changing fast,we have something new ________ with all by ourselves every day. A.deal           B.dealt        C.to deal         D.dealing 答案: C have something new to deal with“有些新的事情要去处理”。故选C。(2008•潍坊)如图,矩形纸片ABCD中,AB=8,将纸片折叠,使顶点B落在边AD的E点上,BG=10.(1)当折痕的另一端F在AB边上时,如图.求△EFG的面积;(2)当折痕的另一端F在AD边上时,如图.证明四边形BGEF为菱形,并求出折痕GF的长.
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