题目内容
☆-5.5=5.5，☆代表的是（ ）
分析：根据☆-5.5=5.5，这一等量关系式，可列方程求解．
解答：解：设☆是x，根据题意得
x-5.5=5.5，
x-5.5+5.5=5.5+5.5，
x=11．
故答案为：A．
x-5.5=5.5，
x-5.5+5.5=5.5+5.5，
x=11．
故答案为：A．
点评：本题考查了学生根据数量关系式列方程解题的能力．
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