题目

—Can you         your absence last Friday? —Well, my car broke down and I had 10 get it taken to a garage． A. settle down     B．depend on    C．account for    D．refer to 答案：C 解析: 略已知：如图，在菱形ABCD中，分别延长AB、AD到E、F，使得BE=DF，连接EC、FC．求证：EC=FC．