高考數(shù)學（重慶專用 理科）一輪復習題庫 12.2基本算法語句 Word版含解析

1、課時作業(yè)64基本算法語句一、選擇題1給出程序如圖所示，若該程序執(zhí)行的結(jié)果是3，則輸入的x值是()a3 b3c3或3 d02計算機執(zhí)行下面的程序段后，輸出的結(jié)果是()a1,3 b4,1c0,0 d6,03(2012杭州聯(lián)考)將兩個數(shù)a8，b17交換，使a17，b8，下面語句正確的是()a bc d4計算機執(zhí)行下面的程序后，輸出的結(jié)果是()a1,3 b 4,1 c6,18 d6,05對賦值語句，描述正確的是()可以給變量提供初值；賦值號左、右不能對換；可以給一個變量重復賦值；不能給一個變量重復賦值a bc d6對該程序判斷正確的是()a求從1 000到1這1 000個自然數(shù)的和b求從1到1 000

2、這1 000個自然數(shù)的和c求從1到1 000這1 000個自然數(shù)的積d求從1 000到1這1 000個自然數(shù)的積7下面為一個求20個數(shù)的平均數(shù)的程序，則在橫線上應填的語句為()ai20 bi20ci20 di20二、填空題8運行下列程序，則其輸出的結(jié)果為_9下列程序是求一個函數(shù)的函數(shù)值的程序，在鍵盤上輸入一個自變量x的值，輸出它的函數(shù)值若執(zhí)行的結(jié)果為3，則輸入的x值為_10運行下面程序框內(nèi)的程序，在兩次運行中分別輸入4和4，則運行結(jié)果依次為_三、解答題11閱讀下面的程序，試求其輸出的結(jié)果是多少12設計算法求1的值，畫出程序框圖，并編寫程序參考答案一、選擇題1c解析：該算法對應的函數(shù)為y|x|，

3、已知y3，則x32b解析：由語句知a134，b13b解析：由賦值語句可知b正確.4c解析：aab236，bab63185d解析：不可以給一個變量重復賦值6b解析：由ssi，ii1，知該程序是求從1到1 000這1 000個自然數(shù)之和7a解析：加完第20個數(shù)后有i21故選a二、填空題8解析：第1次循環(huán)：s，n4，i2；第2次循環(huán)：s，n8，i3；第3次循環(huán)：s，n16，i4；第4次循環(huán)：s，n32，i5；第5次循環(huán)：s，n64， i6；第6次循環(huán)：s，n128，i7滿足條件結(jié)束循環(huán)，輸出s的值為94或3解析：此函數(shù)解析式為y當y3時，x4或x3101,20解析：當x4時，y2，y11；當x4時，

4、y34219，y120三、解答題11解：該程序是一當型循環(huán)結(jié)構(gòu)，計數(shù)變量是k，當k10時運行循環(huán)體其功能是計算s1246810的值，易知s31，即輸出的結(jié)果為3112解：程序框圖：程序：29c91afe4ced1b6c8795ad9c91afe4ced1b6c8795ad91afe4ced1b6c8795ad9c91fe4ced1b6c8795ad29c91afedd1b6c87d1b6c8795ad9c91afe4ced1b6c8795ad91afe4ced1b6c8795ad9c91fe4ced1b6c8795ad29c91af95ad9c91afe4ced1b6c8795ad91afe4

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