随着高考综合科目的确定 ,学科与学科之间紧密联系的题目将越来越突出 ,尤其是作为工具性学科的数学 ,与其它学科的联系更为密切 ,本文通过具体的例子来说明其应用 .一、与物理相结合的题例 1　假设某粮店用一杆不准确的天平(其两臂不等长 )称大米 ,某顾客要购买 2 0ｋｇ大米 , With the determination of comprehensive subjects for college entrance examinations, the topics closely related to disciplines and disciplines will become more and more prominent, especially as a mathematical discipline of tools, which is more closely related to other disciplines. This article illustrates its application through specific examples. 1. Example 1 combined with physics Assume that a certain food shop uses an inaccurate scale (whose two arms are not equal in length) to call rice and a customer wants to buy 20kg of rice.