题目

—Who is _______ girl behind the tree?—Which one? _______ taller one with _______ umbrella? A . the; /; an B . a ; The; the C . the; The; an 答案:C下列命题中,是真命题的为 A.锐角三角形都相似        B.直角三角形都相似   C.等腰三角形都相似        D.等边三角形都相似
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