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树木的“年轮魔法”
你知道树木也有“生日蛋糕”吗？每一圈年轮（ring），就像一根蜡烛，代表它活了一年。
A big tree was transplanted here 15
years ago.
It has 24 tree rings.
Questions:
How many rings does the tree have now?
How many years has it lived?
Hints（提示）:
Each ring = one year of life.
Just count the rings to find the age!
你知道树木也有“生日蛋糕”吗？每一圈年轮（ring），就像一根蜡烛，代表它活了一年。
A big tree was transplanted here 15
years ago.
It has 24 tree rings.
Questions:
How many rings does the tree have now?
How many years has it lived?
Hints（提示）:
Each ring = one year of life.
Just count the rings to find the age!
答案
It has 24 rings now.
It has lived for 24 years.
It has lived for 24 years.
解析
【分析】首先提取题目中的关键信息：明确给出树的年轮数量，且提示每个年轮对应树木的1年寿命。解题时，直接利用题目给出的年轮数，结合提示即可得出两个问题的答案。
【解析】根据题目信息“It has 24 tree rings.”，可知树现在的年轮数为24；结合提示“Each ring = one year of life.”，即每个年轮对应1年寿命，因此树木的存活年数等于年轮数，为24年。
【答案】It has 24 rings now. It has lived for 24 years.
【知识点】年轮与年龄的关系、信息提取
【点评】本题结合生活常识，通过题目直接给出的信息和简单提示即可解答，难度低，适合基础阶段学生完成。
【难度系数】0.9
【解析】根据题目信息“It has 24 tree rings.”，可知树现在的年轮数为24；结合提示“Each ring = one year of life.”，即每个年轮对应1年寿命，因此树木的存活年数等于年轮数，为24年。
【答案】It has 24 rings now. It has lived for 24 years.
【知识点】年轮与年龄的关系、信息提取
【点评】本题结合生活常识，通过题目直接给出的信息和简单提示即可解答，难度低，适合基础阶段学生完成。
【难度系数】0.9
