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            2017成人高考高起點數學選擇題的解題思路

            福建成人高考信息網www.laiwobuy.com 發布時間: 2014年08月31日

            要想確保在有限的時間內,對10多條選擇題作出有效的抉擇,明晰解題思路是十分必要的。一般說來, 數學選擇題有著特定的解題思路,具體概括如下:

              1、仔細審題,吃透題意

              審題是正確解題的前題條件,通過審題,可以掌握用于解題的第一手資料——已知條件,弄清題目要求。

              審題的第一個關鍵在于:將有關概念、公式、定理等基礎知識加以集中整理。凡在題中出現的概念、公式、性質等內容都是平時理解、記憶、運用的重點,也是我們在解選擇題時首先需要回憶的對象。

              審題的第二個關鍵在于:發現題材中的“機關”—— 題目中的一些隱含條件,往往是該題“價值”之所在,也是我們失分的“隱患”。

              除此而外,審題的過程還是一個解題方法的抉擇過程,開拓的解題思路能使我們心涌如潮,適宜的解題方法則幫助我們事半功倍。

              2、反復析題,去偽存真

              析題就是剖析題意。在認真審題的基礎上,對全題進行反復的分析和解剖,從而為正確解題尋得路徑。因此,析題的過程就是根據題意,聯系知識,形成思路的過程。由于選擇題具有相近、相關的特點,有時“真作假時假亦真”,對于一些似是而非的選項,我們可以結合題目,將選項逐一比較,用一些“虛擬式”的 “如果”,加以分析與驗證,從而提高解題的正確率。

              3、抓往關鍵,全面分析

              在解題過程中,通過審題、析題后找到題目的關鍵所在是十分重要的,從關鍵處入手,找突破口,聯系知識進行全面的分析形成正確的解題思路,就可以化難為易,化繁為簡,從而解出正確的答案。

              4、反復檢查,認真核對

              在審題、析題的過程中,由于思考問題不全面,往往會導致“失根”、“增根”等錯誤,因而,反復地檢查,認真地進行核對, 也是解選擇題必不可少的步驟之一。

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