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有人说,数学好学;有人说,数学好玩;我要说,数学好用——它源于生活,又服务于生活．比如,简简单单的一次函数,在生活中处处都可见到它的用武之地．也正是在一次次的运用中,我们才能真真切切地体会到数学的价值．
Some people say that mathematics is easy to learn; some people say that mathematics is fun; I want to say that mathematics is easy to use - it comes from life and it also serves life. For example, a simple function can be seen everywhere in life. It is also in the use of time and again that we can truly appreciate the value of mathematics.