已解锁-C语言课后习题答案

第2章部分习题参考答案、单项选择题：DABDD DAAAB BCD2020/4/8 1第3章部分习题参考答案•、单项选择题：CACBB CDBBB ADCCB DCCBB :、填空题：1. a!"b I I av=c2. x>20 &&x<30 I I x<-1003. 04. 非。

5. 16. x%3==0&&x%7==0 或x%21==02020/4/8 2第3章习题三、编程题2、#include <stdio.h>#include <math.h>void main(){ float a,b,c,p,s;printf(”请输入三角形的三边长：H);sea nf (” ％f %f )&a,&b,&c);if(a+b>c && a+c>b && b+c>a){ p=(a+b+c)/2;s=sqrt(p*(p-a)*(p-b)*(p-c));printf(H三角形面积为：%.2f\n n,s);}else printf(”输入的边长不能构成三角形!\n”); } 2020/4/8 33、#include <stdio.h>void main(){int x,y;scanf(”％d”,&x);if(x>・5 &&XVO) y=x-l;else if(x==O) y=x;else if(x>0 && x<8) y=x+l;else y=10;printf(”y=%d\n”,y);2020/4/8ch=getchar(); 第3章习题」4,大写转小写，小写转大写，其他原样输出。

#indude <stdio.h> void main() { char ch;scanf(,,%c ,,z &ch); if(di>='A'&&chv='Z') ch=ch+32;else if(ch>='a'&& chv='Z)ch=ch-32;printf(,,%c\n ,,z ch);if(ch>=A && ch<=,Z I) printf(,,%c\n ,\ch+32); else if(ch>='a' && ch<='z')printf(”％c\n”,ch ・32);else printf(,,<Vbc\n ,,z ch);2020/4/85第3章_习题」#indude<stdio.h>8. void main(){ int year,flag=l;double money,rate,total;printf("请输入存款本金和年限：");scanf(,,%lf(Vbd,\&money,&year);if(year= = 1) rate=0.00215;else if(year= = 2) rate=0.0023;else if(year==3) rate=0.00245;else if(year==5) rate=0.00275;else if(year==8) rate=0.0032;else flag=O;if(flag= = l){ total=money* (1+rate* 12*yea r);printf("总金额为：％・2lf\rT,total);2020/4/8}else printf(”输入的期限不正确!\n");#indude <stdio.h>void main(){ int year,flag = l; double money,rate,total;printf(H请输入存款本金和年限：H);scanf("％lf%cT,&money,&year);switch (year){ case 1: rate=0.00215; break;case 2: rate=0.0023; break;case 3: rate=0.00245; break;case 5: rate=0.00275; break;case 8: rate=0.0032; break;default: printf("输入的期限不正确!\n，flag=O;?if(flag= = l){ total=money* (1+rate* 12*year);printf(”总金额为：％・2lf\rT,total);}} 2020/4/8 7第4章部分习题参考答案・、单项选择题BCDBD BCDBB CCCCC BACDD二、编程题2・编程输出1^200之间所有能被3整除、且个位数为6的整数。

c语言课后习题答案第二章习题2.什么叫做结构化算法？为什么要提倡结构化算法？答：结构化算法是由一些基本结构顺序组成的。

在基本结构之间不存在向前或向后的跳转,流程的转移只存在于一个基本的结构范围内。

一个非结构化的算法可以用一个等价的结构化算法代替,其功能不变。

跟结构化算法比较起来,非结构化算法有以下缺点：流程不受限制的随意转来转去,使流程图豪无规律使人在阅读的时候难以理解算法的逻辑.难以阅读,也难以修改，从而使算法的可靠性和可维护性难以保证。

4.第三章习题１．#include<stdio.h>#include<math.h>void main(){unsigned int n;float p,p1,r=0.09;scanf("%u",&n);p=pow(1+r,n);p1=(p-1)*100;printf("%5.2f%%\n",p1);}运行结果：输入，回车，见结果：２．#include<stdio.h>#include<math.h>int main(){int bj=1000;float r1,r2,r3,r5,r0,lx1,lx2,lx3,lx4,lx5;r1=0.0414;r2=0.0468;r3=0.0540;r5=0.0585;r0=0.0072;lx1=bj*r5;lx2=bj*(1+r2)*r3;lx3=bj*(1+r3)*r2;lx4=bj*pow(1+r1,5);lx5=bj*r0*5;printf("lx1=%f lx2=%f lx3=%f lx4=%f lx=5%f\n",lx1,lx2,lx3,lx4,lx5); return 0;}运行结果：３．#include<stdio.h>#include<math.h>int main(){long d,p;d=300000;p=6000;double m,r=0.01;m=log(p/(p-d*r))/log(1+r);printf("%4.2f",m);return 0;}运行结果：４．#include<stdio.h>int main(){int c1,c2;c1=97;c2=98;printf("c1=%c,c2=%c\n",c1,c2);printf("c1=%d,c2=%d\n",c1,c2);return 0;}运行结果：①；②；③结果不变。

C 语言课后题编程答案所有章节的课后习题的选择题和填空题大家必须熟练掌握，编程题掌握到第九章即可。

希望大家通过课后的编程题熟悉典型的编程算法，掌握基本的编程思路，注意编程细节。

第3 章3-17编写程序，把560 分钟换算成用小时和分钟表示，然后进行输出。

#include<stdio.h>main(){int h,m。

h=560/60。

m=560%60。

printf(“560 分钟可转换成%d 小时%d 分钟”,h,m)。

}程序总结：（1）只要在程序中用到系统提供的库函数，必须把库函数所在的头文件用#include 命令包含进来。

否则库函数的使用无效。

输入输出库函数的头文件是：stdio.h。

数学函数的头文件是：math.h。

字符处理函数的头文件是：ctype.h。

字符串处理函数的头文件是：string.h。

（2）注意C 语言中的“/”和“%”两种运算符。

“/”的运算结果取决于两操作数的类型。

比如：1/2=0（与数学中不同，结果与操作数的类型一致，所以结果只取商值）,1.0/2=0.5(除之前2 要自动类型转换成2.0，因为只有同类型的操作数才能进行除运算), 1/2.0=0.5, 1.0/2.0=0.5。

“%”的两个操作数都必须是整数。

（3）printf(“560分钟可转换成%d 小时%d 分钟”，h,m)。

printf 第一个参数要尽量详细，这样可以提高输出结果的可读性，恰当好处的添加提示性信息，可以提高程序的质量。

（4）i nt h,m。

变量起名要有艺术性，尽量做到见名知意。

3-18编写程序，输入两个整数，1500 和350，求出它们的商和余数并进行输出。

#include<stdio.h>main(){int a,b,m,n。

printf(“请输入两个整数:\n”)。

scanf(“%d%d”,&a,&b)。

m=a/b。

n=a%b。

printf(“%d 除以%d 商%d 余%d”,a,b,m,n)。

c语言课后习题答案C语言课后习题答案C语言作为一门广泛应用于编程领域的高级编程语言，对于学习者来说是必不可少的一门课程。

在学习过程中，课后习题是巩固知识、提高编程能力的重要环节。

然而，有时候我们可能会遇到一些难以解答的问题，或者对于某些题目的解答存在疑惑。

在这篇文章中，我将为大家提供一些C语言课后习题的答案，并解释一些常见问题。

1. 编写一个程序，从键盘输入一个整数，判断该数是否为素数。

解答：```c#include <stdio.h>int isPrime(int num) {if (num <= 1) {return 0;}for (int i = 2; i * i <= num; i++) {if (num % i == 0) {return 0;}}return 1;}int main() {int num;printf("请输入一个整数：");scanf("%d", &num);if (isPrime(num)) {printf("%d是素数。

\n", num);} else {printf("%d不是素数。

\n", num);}return 0;}```以上代码中，我们定义了一个函数`isPrime`，用于判断一个数是否为素数。

在`main`函数中，我们从键盘输入一个整数，并调用`isPrime`函数进行判断。

如果返回值为1，则说明该数是素数，否则不是素数。

2. 编写一个程序，计算并输出1到100之间所有能被3整除但不能被5整除的数之和。

解答：```c#include <stdio.h>int main() {int sum = 0;for (int i = 1; i <= 100; i++) {if (i % 3 == 0 && i % 5 != 0) {sum += i;}}printf("1到100之间所有能被3整除但不能被5整除的数之和为：%d\n", sum);return 0;}```以上代码中，我们使用`for`循环遍历1到100之间的所有整数，使用条件判断语句`if`筛选出能被3整除但不能被5整除的数，并将它们累加到`sum`变量中。

第1章习题参考答案1、选择题(1)C (2)C (3)D (4)B (5)D(6)D (7)C (8)A (9)A (10)C2、填空题(1)函数、一个主函数、函数。

(2) /*、*/ 。

(3) 连接。

(4) # 。

(5) main 。

(6) /*……*/ 。

(7) .h 。

(8) F5 。

(9) .exe (10) .exe 、 .obj 、.exe 。

3、程序设计题(1) #include <stdio.h>void main(){printf(" *\n");printf(" * S *\n");printf(" *\n");}(2) #include <stdio.h>void main(){printf("*****************\n");printf("Your are welcome!\n");printf("-----------------\n");}(3) #include <stdio.h>void main(){char c1,c2;printf("请输入c1和c2的值：");c1=getchar();scanf(" %c",&c2);printf("c1=%c\n",c1);printf("c2=");putchar(c2);printf("\n");}第2章习题参考答案1、简述算法的概念。

答：算法就是为解决一个具体的问题而使用的确定的、有限的方法和步骤。

2、算法应具备哪些特性？答：算法应具备有穷性、确定性、可行性、输入、输出等五种特性。

3、分别说明什么是自然语言描述法？什么是框图语言描述法？什么是伪语言描述法？什么是N-S框图语言描述法？它们的优缺点各是什么？答：①用人们日常使用的语言来描述算法，称为算法的自然语言描述法。

第一章C语言初步一、选择题1.C2.D3.D4.A5.D6.B7.B 8.B 9.C 10.A二、思考与应用题1．A．字符串常量B．字符串常量C．整型常量D．浮点型常量（double）2．A．long doubleB．long intC．floatD．字符型常量3．A．整型常量B．字符型常量C．字符串常量D．字符串常量4．FirstExample: 10,w is Yz is 5.125．int main(void){return 0;}6．#include<stdio.h>int main(void){print f("Hello World");return 0;}7．#include<stdio.h>int main(void){printf("We are to learn correct");printf("C language here");return 0;}/*main*/8．#include<stdio.h>int main(void){/*Local Definition*/int a;float b;char c;/*Statements*/printf("The end of the program."); return 0;}/*main*/9．#include<stdio.h>int main(void){/*Local Definition*/int a;float b;char c,d;/*Statements*/printf("The end of the program."); return 0;}/*main*/10．#include<stdio.h>int main(void){/*Local Definition*/int a;char b,c,d;float e,f;/*Statements*/printf("The end of the program."); return 0;}/*main*/11．A．char option;B．int sum=0;C．float produce=1;12．A．short code;B．float salesTax=.0825;C．double sum=0;13．#include<stdio.h>int main(void){float cost=172.53;printf("The sales total is: $ %6.2f\n",cost);printf("^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^");return 0;}14．#include<stdio.h>int main(void){printf("******\n");printf("******\n");printf("******\n");printf("******\n");return 0;}15．#include<stdio.h>int main(void){printf("*\n");printf("**\n");printf("***\n");printf("****\n");return 0;}16．#include<stdio.h>int main(void){int x1=1;int x2=10;int x3=100;int x4=1000;int x5=10000;printf("%d %d %d %d %d\n",x1,x2,x 3,x4,x5);printf("%f %f %f %f %f\n",x1,x2,x 3,x4,x5);return 0;}17．#include<stdio.h>int main(void){int x;printf("Please enter an integer:\n");scanf("%d",&x);printf("The number as a character:%c\n",x);printf("The number as a decimal:%d\n",x);printf("The number as a float:%f\n",x);return 0;}三、编程题1．#include<stdio.h>int main(void){int x1;int x2;int x3;printf("Please enter three numbers:");scanf("%d%d%d",&x1, &x2, &x3);printf("\nYour numbers forword:\n");printf("%8d\n%8d\n%8d\n",x1,x2,x3 );printf("Your numbers reversed:\n");printf("%8d\n%8d\n%8d\n",x3,x2,x1 );return 0;}2．#include<stdio.h>int main(void){int x1;int x2;int x3;int x4;int x5;int x6;int x7;int x8;int x9;int x10;printf("Please enter 10 numbers:\n");scanf("%d%d%d%d%d%d%d%d%d%d",&x1, &x2, &x3, &x4, &x5, &x6, &x7, &x8, &x9, &x10);printf("\nYour numbers are:\n");printf("%8d%8d\n",x1,x10);printf("%8d%8d\n",x2,x9);printf("%8d%8d\n",x3,x8);printf("%8d%8d\n",x4,x7);printf("%8d%8d\n",x5,x6);return 0;}3．#include<stdio.h>int main(void){int x1;int x2;int x3;int x4;int x5;int x6;int x7;int x8;int x9;printf("Input:\n");printf(" ");scanf("%d%d%d%d%d%d%d%d%d",&x1, &x2, &x3, &x4, &x5, &x6, &x7, &x8, &x9);printf("\nOutput\n");printf("%8d,%d,%d\n",x1,x2,x3);printf("%8d,%d,%d\n",x4,x5,x6);printf("%8d,%d,%d\n",x7,x8,x9);return 0;}第二章表达式与简单程序设计一、选择题1.A2.D3.C4.B5.B6.D7.B二、思考与应用题1．A．2 B．8 C．8 D．0 E．11 2．A．4，4B．4，4 C．4，4 D．2，3 E．4，53．A．12 B．-27 C．14 D．2 E．4 4．A．22.52 B．4.5 C．13.333333 D．0.882353 E．0.075．ABCEF6．A．5 B．2 C．4 D．1 E．7．A．5 B．2 C．4 D．-3 E．6 8．A．5 B．294 C．4 D．29 E．9 9． 50 50 100 2510．#include<stdio.h>int main(void){float x;float y;float p;float s;float total;printf("Please enter x and y:\n");scanf("%f%f",&x,&y);p=x*y;s=x+y;total=s*s+p*(s-x)*(p+y);printf("total=%f",total);return 0;}11．#include<stdio.h>int main(void){int x,y,z;printf("Please enter two integers:\n");scanf("%d%d",&x,&y);z=x*y;printf("%d*%d=%d",x,y,z);return 0;}12．#include<stdio.h>int main(void){float x;int y;printf("Please enter a floating point number:\n");scanf("%f",&x);y=(int)x%10;printf("%d",y);return 0;}13．#include<stdio.h>int main(void){float x;int y;printf("Please enter a floating point number:\n");scanf("%f",&x);y=(int)x/10%10;printf("%d",y);return 0;}14．#include<stdio.h>int main(void){float x;float y;float c;float s;p rintf("Please enter length and width:\n");s canf("%f%f",&x,&y);c=2*(x+y);s=x*y;p rintf("The circumference is %f\n",c);p rintf("The measure of area is %f",s);r eturn 0;}15．#include<stdio.h>int main(void){int a;f loat r;p rintf("Please enter an angle(integer):\n");s canf("%d",&a);r=a/57.295779;p rintf("%d°is %.5f radians",a,r);r eturn 0;}16．#include<stdio.h>int main(void){float c;float F;printf("Please enter centigrade:\n");scanf("%f",&c);F=32+(c*180.0/100.0);printf("Fahrenheit is %f ",F);return 0;}17．（1）double m,v,KinEn;KinEn=m*v*v/2;（2）double b,c,res;res=(b+c)/（2*b*c）;18．（1）#include<stdio.h>int main(void){int x=25;x=x+5;printf("%d\n",x);x=x+5;printf("%d\n",x);return 0;}（2）#include<stdio.h>int main(void){int x=10;x=x+2;printf("%d\n",x);x=x+2;printf("%d\n",x);return 0;}（3）#include<stdio.h>int main(void){int x=32;x=x*2;printf("%d\n",x);x=x*2;printf("%d\n",x);return 0;}三、编程题1．A．#include<stdio.h>int main(void){float x;float y;printf("Please enter an number(inch):\n");scanf("%f",&x);y=x/12;printf("%f inches is %f feet ",x,y);return 0;}B．#include<stdio.h>int main(void){float x;float y;printf("Please enter an number(inch):\n");scanf("%f",&x);y=x/36;printf("%f inches is %f yards ",x,y);return 0;}C．#include<stdio.h>int main(void){float x;float y;printf("Please enter an number(inch):\n");scanf("%f",&x);y=x*2.54;printf("%f inches is %f centimeters ",x,y);return 0;D．#include<stdio.h>int main(void){float x;float y;printf("Please enter an number(inch):\n");scanf("%f",&x);y=x/39.37;printf("%f inches is %f meters ",x,y);return 0;}2．#include<stdio.h>int main(void){int fib1;int fib2;int fib3;fib1=13+21;fib2=21+fib1;fib3=fib1+fib2;printf("%d,%d,%d",fib1,fib2,fib3);return 0;}3．#include<stdio.h>int main(void){int x;int b1;int b2;int b3;int b4;int b5;printf("Please enter an integer(0-32767):\n");scanf("%d",&x);b1=x%10;b2=x/10%10;b3=x/100%10;b4=x/1000%10;b5=x/10000%10;printf("%4d%4d%4d%4d%4d\n",b5,b4,b3,b2,b1);printf("%4d%4d%4d%4d%\n",b4,b3,b2,b1);printf("%4d%4d%4d\n",b3,b2,b1);printf("%4d%4d\n",b2,b1);printf("%4d",b1);return 0;}第三章分支程序设计一、选择题1.C2.D3.A4.B5.B6.A7.C8.C 9.A二、思考与应用题1．A．0 B．1 C．1 D．0 E．0 2．A．x>=y B．x<y C．x!=y D．x==y E．x>y3．A．0 B．1 C．1 D．1 E．0 4．x=4,y=3,z=25．x=4,y=1,z=26．x=4,y=2,z=27．x=4,y=1,z=28．x=0,y=0,z=19．x=2,y=0,z=210．x=0,y=0,z=111．x=0,y=0,z=112．x=-1,y=0,z=013．x=0,y=1,z=014．x=1,y=3,z=115．x=1,y=3,z=116．x=4,y=3,z=017．if(aChar=='E'){c++;printf("Value is E\n");}18．switch(ch){case ‘E’:case ‘e’:countE++;break;case ‘A’:case ‘a’:countA++;break;case ‘I’:case ‘i’:countI++;break;default:printf("Error-Not A,E,or I\a\n"); }三、编程题1．#include<stdio.h>main( ){int x,x1,x2,x3;char grade;printf("please enter three text scores(0-100):\n");scanf("%d%d%d",&x1,&x2,&x3);x=(x1+x2+x3)/3;if(x>=90)grade='A';else if(x>=70&&x<90)if(x3>90)grade='A';elsegrade='B';else if(x>=50&&x<70)if((x2+x3)/2>70)grade='C';elsegrade='D';else if(x<50)grade='F';printf("%c\n",grade);}2．#include<stdio.h>main( ){int year;printf("please enter a year:\n");scanf("%d",&year);if(year%4==0&&year%100!=0||year%400==0)printf("%d is a leap year!\n",year);elseprintf("%d is a non-leap year!\n",year);}3．#include<stdio.h>main( ){i ntyearNow,monthNow,dayNow,year,month,day,x;printf("Please enter the date today(month day year):\n");scanf("%d%d%d",&monthNow,&dayNow,&yearNow);printf("Please enter your birthday(month day year):\n");s canf("%d%d%d",&month,&day,&year);if(monthNow<month)x=yearNow-year-1;else if(monthNow==month)if(dayNow<day)x=yearNow-year-1;elsex=yearNow-year;elsex=yearNow-year;printf("You are %d years old!\n",x);}4．#include<stdio.h>#include<stdlib.h>#include<time.h>main( ){int number,Ynumber;srand(time(NULL));number=rand()%20+1;printf("I am thinking of a number between 1 and 20.\n");printf("Can you guess what it is?");scanf("%d",&Ynumber);if(Ynumber==number)printf("Congratulations!You did it.");else{if(Ynumber>number)printf("Your guess is high.Try again:");elseprintf("Your guess is low.Try again:");scanf("%d",&Ynumber);if(Ynumber==number)printf("Congratulations!You did it.");else{if(Ynumber>number)printf("Your guess is high.Try again:");elseprintf("Your guess is low.Try again:");scanf("%d",&Ynumber);if(Ynumber==number)printf("Congratulations!You did it.");else{if(Ynumber>number)printf("Your guess is high.Try again:");elseprintf("Your guess is low.Try again:");scanf("%d",&Ynumber);if(Ynumber==number)printf("Congratulations!You did it.");else{if(Ynumber>number)printf("Your guess is high.Try again:");elseprintf("Your guess is low.Try again:");scanf("%d",&Ynumber);if(Ynumber==number)printf("Congratulations!You did it.");else{printf("sorry.The number was %d.\n",number);printf("You should have gotten it by now.\n");printf("Better luck next time.");}}}}}}5．#include<stdio.h>main( ){int year,month,day,x=0,y,z;printf("Please enter your birthday:(year month day)\n");scanf("%d%d%d",&year,&month,&day);y=((year-1)*365+((year-1)/4)-((year-1)/100) +((year-1)/400))%7;switch(month){case 12:x=x+30;case 11:x=x+31;case 10:x=x+30;case 9:x=x+31;case 8:x=x+31;case 7:x=x+30;case 6:x=x+31;case 5:x=x+30;case 4:x=x+31;case 3:x=x+28;case 2:x=x+31;case 1:x=x+0;}if(year%4==0&&year%100!=0||year%400==0)day++;z=(x+day+y)%7;switch(z){case 0:printf("The day of your birthday is Sunday!");break;case 1:printf("The day of your birthday is Monday!");break;case 2:printf("The day of your birthday is Tuseday!");break;case 3:printf("The day of your birthday is Wednesday!");break;case 4:printf("The day of your birthday is Thursday!");break;case 5:printf("The day of your birthday is Friday!");break;case 6:printf("The day of your birthday is Saturday!");break;}}6．#include<stdio.h>#include<math.h>main( ){int a,b,c,p;float x1,x2;printf("Please enter a,b,c:\n");scanf("%d%d%d",&a,&b,&c);p=b*b-4*a*c;if(a==0)if(b==0)printf("There is no solution!");else{x1=-(float)c/b;printf("The solution is x1=%f",x1);}elseif(p<0)printf("There is no real solution!");else{x1=-b+sqrt(p)/(2*a);x2=-b-sqrt(p)/(2*a);printf("The solutions are x1=%f,x2=%f",x1,x2);}}。

C语言课后习题参考答案第一章：基础知识问题1：C语言的发展历史及特点C语言是由贝尔实验室的肯·汤普逊和丹尼斯·里奇在20世纪70年代初开发的一种高级程序设计语言。

它以其简洁、高效和可移植性而闻名。

C语言被广泛应用于系统级编程、嵌入式系统和科学计算等领域，并成为其他编程语言的基础。

问题2：C语言的基本数据类型及其存储范围C语言的基本数据类型包括字符型（char）、整型（int）、浮点型（float）、双精度浮点型（double）和空类型（void）。

它们的存储范围如下：- char：-128 到 127 或 0 到 255- int：-32,768 到 32,767 或 0 到 65,535- float：3.4E-38 到 3.4E38- double：1.7E-308 到 1.7E308- void：无特定存储范围问题3：如何在C语言中输出语句？在C语言中，可以使用printf函数来输出语句。

它的基本语法为：```cprintf("要输出的内容");```问题4：定义变量的语法规则在C语言中，定义变量的语法规则如下：```c数据类型变量名;```例如，定义一个整型变量x：```cint x;```问题5：如何进行变量的赋值？变量的赋值可以使用赋值运算符（=）。

例如，将一个整型常量10赋值给变量x：```cx = 10;```第二章：控制结构问题1：if语句的语法结构if语句用于根据条件执行不同的代码块。

它的基本语法结构如下：```cif (条件) {// 条件为真时执行的代码}```问题2：switch语句的用法及语法结构switch语句用于根据不同的表达式值执行相应的代码块。

它的基本用法及语法结构如下：```cswitch (表达式) {case 值1:// 当表达式的值等于值1时执行的代码break;case 值2:// 当表达式的值等于值2时执行的代码break;default:// 当表达式的值与所有case都不匹配时执行的代码break;}```问题3：循环语句的分类及语法结构C语言中的循环语句包括for循环、while循环和do-while循环。

C语言课后习题答案-第四版-第一章5、请参照本章例题，编写一个C语言程序，输出以下信息：****************************V e r y G o o d !****************************#include <stdio.h>int main ( ){printf ("**************************\n\n");printf(" Very Good!\n\n");printf ("**************************\n");return 0;}6、编写一个C语言程序，输入a,b,c三个值，输出其中最大值。

#include <stdio.h>int main(){int a,b,c,max;printf("please input a,b,c:\n");scanf("%d%d%d",&a,&b,&c);max=a;if (max<b)max=b;if (max<c)max=c;printf("The largest number is %d\n",max); return 0;}#include <stdio.h>int main(){int a,b,c,max;printf("please input a,b,c:\n");scanf("%d%d%d",&a,&b,&c);max=a>b?a:b;max=max>c?max:c;printf("The largest number is %d\n",max); return 0;}第3章1、假如我国国民生产总值的年增长率为9%，计算10年后我国国民生产总值与现在相比增长多少百分比。

5-1#include"stdio.h" void main(){char c1,c2;printf("c1:");c1=getchar();if(c1>='a'&&c1<='z') c2=c1-32;else if(c1>='A'&&c1<='Z') c2=c1+32;else c2=c1;printf("=>%c\n",c2);}5-2#include"stdio.h"void main(){char c;printf("c:");c=getchar();if(c>='A'&&c<='Z')if(c=='A') printf("没有前面的字母！");else if(c=='Z') printf("没有后面的字母!!");else printf("前面的字母=%c,后面的字母=%c",c-1,c+1);printf("\n");} 5-3#include"stdio.h"void main(){int s;char g;printf("s:");scanf("%d",&s);if(s>=0&&s<=100){switch(s/10){case 9:case 10: g='A';break;case 8: g='B';break;case 7: g='C';break;case 6: g='D';break;default: g='E';}printf("g=%c\n",g);}else printf("成绩不在百分制范围内！\n"); }5-4#include"stdio.h"void main(){int y,m,d,dok;int yy,mm,dd;printf("y,m,d:");scanf("%d,%d,%d",&y,&m,&d);switch(m){case 1: case 3: case 5: case 7: case 8: case 10: case 12:if(d>0&&d<=31) dok=4;else dok=0;break;case 4: case 6: case 9: case 11:if(d>0&&d<=30) dok=3;else dok=0;break;case 2: if(y%4==0&&y%100!=0||y%400==0)if(d>0&&d<=29)dok=2;else dok=0;elseif(d>0&&d<=28)dok=1;else dok=0;break;default: dok=0;}if(dok==0) printf("月份或日期不对！\n");else{switch(dok){case 1: if(d==28){yy=y;dd=1;mm=m+1;}else{yy=y;dd=d+1;mm=m;}break;case2:if(d==29){yy=y;dd=1;mm=m+1;}else{yy=y;dd=d+1;mm=m;}break;case3:if(d==30){yy=y;dd=1;mm=m+1;}else{yy=y;dd=d+1;mm=m;}break;case 4:if(d==31)if(m==12){yy=y+1;dd=1;mm=1;}else{yy=y;dd=1;mm=m+1;}else{yy=y;dd=d+1;mm=m;}break;}printf("Tomorrow:%d年%d月%d日\n",yy,mm,dd);}}5-5#include"stdio.h"void main(){int a,b,c,t;printf("a,b,c:");scanf("%d,%d,%d",&a,&b,&c);if(a+b>c&&b+c>a&&a+c>b){if(a>b){t=a;a=b;b=t;}if(a>c){t=a;a=c;c=t;}if(b>c){t=b;b=c;c=t;}if(a==b&&b==c) printf("等边三角形.");else if(a==b||b==c||a==c) printf("等腰角形.");else if(c*c==a*a+b*b) printf("直角三角形.");else printf("任意三角形.");printf("\n");}else printf("不能构成三角形！\n");}6-1#include"stdio.h"void main(){int a,b,m,n,k;printf("m,n:");scanf("%d,%d",&m,&n);a=m;b=n;k=a%b;while(k){a=b;b=k;k=a%b;}printf("%d\n",(m*n/b));}6-2#include"stdio.h"void main(){int n;int i,j,s;printf("n=");scanf("%d",&n);for(i=1;i<=n;i++){s=0;for(j=1;j<i;j++)if(i%j==0) s=s+j;if(s==i) {printf("%d:",i);for(j=1;j<i;j++)if(i%j==0) printf("%d ",j);printf("\n");}}} 6-3#include"stdio.h"#include"math.h"void main(){double x,y,zd,zx,x1,x2;zd=zx=50;for(x=0;x<=2;x=x+0.2){y=2*pow(x,3)-3*pow(x,4)+6*pow(x,5)-4*x+50;if(y>zd){ zd=y;x1=x;}if(y<zx){ zx=y;x2=x;}}printf("x=%f,max=%f\n",x1,zd);printf("x=%f,min=%f\n",x2,zx);}6-4#include"stdio.h"void main(){double x,sum=0,a,b,c;int i;printf("x=");scanf("%lf",&x);a=x;b=1.0;c=1.0;for(i=1;i<=10;i++){sum=sum+a/(b*c);a=a*x*x;b=b+2;c=c*i;}printf("y(%.2lf)=%lf\n",x,sum);}7-1/*选择排序*/#include"stdio.h"void main(){int i,j,n,k,temp;int a[10];printf("n(<10):");scanf("%d",&n);printf("Original:");for(i=0;i<n;i++) scanf("%d",&a[i]);for(i=0;i<n-1;i++){ /*趟*/k=i;for(j=i+1;j<n;j++) /*比较次数*/if(a[j]<a[k]) k=j;/*<升序，>?*/if(k!=i){temp=a[i];a[i]=a[k];a[k]=temp;}}printf("Ordered:");for(i=0;i<n;i++) printf("%d ",a[i]);printf("\n");}7-2#include"stdio.h"void main(){int a[3][3];int i,j,s=1;printf("Input:\n");for(i=0;i<3;i++)for(j=0;j<3;j++){scanf("%d",&a[i][j]);if(i==j) s=s*a[i][j];}printf("s=%d\n",s);} 7-3/*杨辉三角*/#include"stdio.h"void main(){int x[7][7];int i,j;for(i=0;i<7;i++) {x[i][0]=1;x[i][i]=1;}for(i=2;i<7;i++)for(j=1;j<i;j++)x[i][j]=x[i-1][j]+x[i-1][j-1];for(i=0;i<7;i++){for(j=0;j<=i;j++)printf("%3d",x[i][j]);printf("\n");}}7-4#include<stdio.h>#include<string.h>void main(){char str[21];int i,j;printf("str:");gets(str);for(i=0,j=strlen(str)-1;i<=j;i++,j--)if(str[i]!=str[j]) break;if(i>j) printf("%s是回文\n",str);else printf("%s不是回文\n",str);}7-5/*输入一维数组的10个元素，并将最小值与第1个数交换，最大值与最后一个数交换，然后输出交换后的结果*/#include<stdio.h>void main(){int a[10],i,zx,zd;printf("Input:\n");zx=zd=0;for(i=0;i<10;i++){scanf("%d",&a[i]);if(a[i]<a[zx]) zx=i;if(a[i]>a[zd]) zd=i;}if(zx!=0){int t;t=a[0];a[0]=a[zx];a[zx]=t;}if(zd!=9){int t;t=a[9];a[9]=a[zd];a[zd]=t;}for(i=0;i<10;i++)printf("%d ",a[i]);printf("\n");} 8-2#include"stdio.h"double xexp(double x,int n){double c;if(n==0) c=1.0;else c=x*xexp(x,n-1);return c;}void main(){int n;double x;printf("x:");scanf("%lf",&x);printf("n:");scanf("%d",&n);printf("Result=%g\n",xexp(x,n));}8-3#include"stdio.h"int find(int x[],int n,int y){int i,pos=-1;for(i=0;i<n;i++)if(x[i]==y) pos=i;return pos;}void main(){int a[10]={11,1,13,15,18,7,19,27,3,8};int i,y,pos;for(i=0;i<10;i++) printf("%d ",a[i]);printf("\ny:");scanf("%d",&y);pos=find(a,10,y);if(pos==-1) printf("Not found!\n");else printf("Position=%d\n",pos);}8-1#include"stdio.h"#include"conio.h" //getch()#include"stdlib.h" //srand(),rand(),system("cls") #include"time.h" //time()void main(){void init(int a[][5],int m,int n);void input(int a[][5],int m,int n);void output(int a[][5],int m,int n);int min(int b[][5],int m,int n);int a[5][5],ch='0';while(1){system("cls"); //清屏printf("1.初始化 2.键盘输入0.结束程序:");printf("\n");if(ch=='0') break;else if(ch=='1'){init(a,5,5);output(a,5,5);}else if(ch=='2'){input(a,5,5);output(a,5,5);}else printf("Error!\n");printf("Min element:%d\n",min(a,5,5));printf("按任意键继续！\n");getch();}}void init(int a[][5],int m,int n){int i,j;srand(time(0)); //time(0)表示以当前的时间做种子,增加每次运行的随机性for(i=0;i<5;i++)for(j=0;j<5;j++)a[i][j]=rand()%100; //随机数范围:0~32767,将它控制在0~99的范围}void input(int a[][5],int m,int n){int i,j;printf("Input Array 5X5:\n");for(i=0;i<m;i++)for(j=0;j<n;j++)scanf("%d",&a[i][j]);}void output(int a[][5],int m,int n){int i,j;printf("Output Array 5X5:\n");for(i=0;i<5;i++){for(j=0;j<5;j++)printf("%2d ",a[i][j]);printf("\n");}}int min(int b[][5],int m,int n){int i,j,zx;zx=b[0][0];for(i=0;i<m;i++)for(j=0;j<n;j++)if(i==j&&b[i][j]<zx) zx=b[i][j];return zx;}8-4#include"stdio.h"float pave,nave;void saver(float a[],int n){int i,z,f;float psum,nsum;psum=nsum=0.0;z=f=0;for(i=0;i<n;i++)if(a[i]<0) {nsum=nsum+a[i];z++;}else if(a[i]>0) {psum=psum+a[i];f++;}else continue;pave=(z!=0?psum/z:0.0);nave=(f!=0?nsum/f:0.0);}void main(){float a[10]={1.0,11.0,3.0,-1.5,-5.5,-2};saver(a,10);printf("pave=%.1f,nave=%.2f\n",pave,nave); } 8-5#include"stdio.h"#include"math.h"void p1(int a,int b){printf("has two equal roots:%\n",-b/(2*a));}void p2(int a,int b, int disc){float x1,x2;x1=(-b+sqrt(disc))/(2*a);x2=(-b-sqrt(disc))/(2*a);printf("Has distant real roots:% and %\n",x1,x2);}void p3(int a,int b, int disc){float real,image;real=-b/(2*a);image=sqrt(-disc)/(2*a);printf("Has complex roots:\n");printf("%+%8.4fi\n",real,image);printf("%-%8.4fi\n",real,image);}void main(){ int a,b,c,disc;printf("a,b,c:");scanf("%d,%d,%d",&a,&b,&c);disc=b*b-4*a*c;if(fabs(disc)<=1e-6) p1(a,b);else if(disc>1e-6) p2(a,b,disc);else p3(a,b,disc);}8-6#include"stdio.h"#include"stdlib.h"#include"conio.h"#include"time.h"void main(){void printaverage(int score[][5],int m,int n);void printname(int score[][5],int m,int n);int score[10][5];int i,j;srand(time(0));for(i=0;i<10;i++)for(j=0;j<5;j++)score[i][j]=50+rand()%50+1;printf("Output Students' score:\n");printf("Course 1 2 3 4 5\n");printf("-------------------------\n");for(i=0;i<10;i++){printf("No.%2d:",i+1);for(j=0;j<5;j++)printf("%3d ",score[i][j]);printf("\n");}printaverage(score,10,5);printname(score,10,5);} void printaverage(int score[][5],int m,int n){int i,j,sum;printf("\nAverage score:\n");for(i=0;i<m;i++){sum=0;for(j=0;j<n;j++)sum=sum+score[i][j];printf("No.%d:%.1f\n",i+1,sum/5.0);}}void printname(int score[][5],int m,int n){int i,j,max0,row0;for(j=0;j<5;j++){max0=score[0][j];for(i=0;i<10;i++)if(score[i][j]>max0){max0=score[i][j];row0=i;}printf("Course %d,max score=%d,student:No.%d\n",j+1,max0,row0+1);}}大学英语I词汇练习题Choose the best one to complete each sentence.1. She felt like ____C___ frustration, but she was determined not to lose her self-control.A. to cry out ofB. to cry forC. crying out ofD. crying for2. The method he used turned out to be ___A____ in improving the students' English.A. effectiveB. abilityC. responseD. explicit3. Measures had to be taken in face of the housing problem that ____C____ in the city.A. foundedB. raisedC. aroseD. produced4. Without electronic computers, much of today's advanced technology ___D____.A. haven't been achievedB. wouldn't be achievedC. hadn't been achievedD. wouldn't have been achieved5. Jane said to her husband, "Don't worry. There is no cause for __B______ about our daughter'sability to manage herself."A. careB. concernC. attentionD. love6. The tap won't ____A____, and there is water all over the floor.A. turn offB. turn downC. turn onD. turn up7. Wearing the right shoes and clothes ____B____ being fit can make all the difference.A. in additionB. as well asC. alsoD. too8. She didn't try to do anything for her daughter, and ____B____ it's too late now.A. in caseB. in any caseC. at this caseD. in case of9. The girl said she hated _____C___ he smiled at her.A. that wayB. this wayC. the wayD. all the way10. I'll call the hotel. I'll tell them we'll ____A____ tomorrow morning and stay there for two nights.A. check inB. check outC. check offD. check over11. My father didn't go to New York; the doctor suggested that he ___C____ there.A. not to goB. won'tC. not goD. not to go to12. She _____C____ him to find answers to her problems.A. learned fromB. came intoC. leaned onD. subjected to13. The large wings of that bird ______B_____ it to fly high and fast.A. makeB. enableC. forceD. realize14. If he ____D___ the policeman honestly, he would not have been arrested.A. would answerB. answerC. should answerD. had answered15. I intended ___A____ you last Sunday, but I had no time.A. to have called onB. calling onC. to be calling onD. to be called on16. If you try to learn too many things at a time, you may get ____D___.A. alarmedB. scaredC. surprisedD. confused17. I haven't read this book, and my brother hasn't ____A____.A. eitherB. neitherC. alsoD. too18. No sooner ____B_____ than the truck started off.A. his luggage was loadedB. had his luggage been loadedC. loaded his luggageD. his luggage was being loaded19. At the end of the game, the whole crowd ____C____ their feet and cheered wildly.A. emerged fromB. rose fromC. got toD. stood up20. Darren has decided to give ___D_____ football at the end of this season.A. inB. forC. offD. up21. Neither his friends nor his mother ____B____ his marriage to that girl.A. acceptB. acceptsC. agreeD. agrees22. Most people believe that he is quite _____A___ of lying to get out of trouble.A. capableB. enabledC. ableD. skilled23. We were told that most of our luggage would be _____B___ by sea.A. approachedB. transportedC. handledD. communicated24. The Broadcasting Museum also offers Saturday workshops to _____B___ children with the world of radio.A. contriveB. acquaintC. acquireD. admit25. Without a passport, leaving the country is ____D___.A. out of questionB. without questionC. in the questionD. out of the question26. She states her views very ___A______.A. definitelyB. definiteC. infiniteD. infinitely27. You need to ____D____ the employers that you can do the job.A. convictB. confuseC. confirmD. convince28.The little boy was so lucky to have ___B_____ the earthquake.A. surviveB. survived C .surviving D. survival29. It is ___B___ that later in life you will see each other again.A. likeB. likelyC. likedD. seemed30.Women’s social ____B____ has changed much over the years.A. stateB. statusC. statesD. statement31.The novel _____D____ the imagination of thousands of readers.A. caterB. cateredC. captureD. captured32.There are good chances of ______D______ working in this firm.A. prospectB. portionC. positionD. promotion33.If you are ______A_____ a night owl, having the first class start in the afternoon might be thebest thing that could ever happen to you.A. more ofB. more thanC. much moreD. more34. The conference discussed the fair ______A_____of income and wealth.A. distributionB. distributeC. contributionD. contribute35. I was so ___C__ in today's history lesson that I didn't understand anything.A. amazedB. confusingC. confusedD. amazing36. ___B___ in England, Anne Bradstreet both admired and imitated several English poets.A. Having born and educatedB. Born and educatedC. Since born and educatedD. To be born and educated37. You will see this product ___B___ wherever you go.A. to be advertisedB. advertisedC. advertiseD. advertising38. I never forget my __B__ with you for the first time.A. to meetB. meetingC. to have metD. having to be meeting39.She was so angry that she left like __B__ something at him.A. to throwB. throwingC. to have thrownD. having thrown40. We are ___C__ in different kinds of extracurricular activities on campus.A. having involvedB. to involveC. involvedD. involving41.Let me assure you that it was not done ______D_____.A. intensiveB. intensivelyC. intentionalD. intentionally42.This medicine can ____A____ the pain in no time.A. lessenB. lessC. looseD. loosen43.Advertising is often the most ____A____ method of product promotion.A. effectiveB. effectedC. emotionalD. efficient44.It is at 5 a.m. _C___ the train from Beijing to Guangzhou will arrive.A. forB. withC. thatD. when45.Things might have been much worse if the mother _B___ on her right to keep the baby.A. has been insistingB. had insistedC. would insistD. insisted46.Had he worked harder, he __B__ the exams.A. must have got throughB. would have got throughC. permitted are freshmenD. are permitted freshmen47.God knows, how can I ____A____ six exams a week?.A. endureB. tolerateC. bear D .suffer48.All their attempts ______C______ the child from the burning building were in vain.A. rescuedB. to have rescueC. to rescueD. in rescuing49，Could you find someone ______C_______ for me to play tennis with?A. to fitB. fitC. fittingD. suit50. The smooth space flight marks a big ______D______ for Chinese scientists.A. breakB. breakingC. breakupD. breakthrough51 Economic crises destroy the capitalist system, and they grow in size and ____A____.A. durationB. duringC. endureD. enduringpanies will have to do more than this if they are to ___B_____ the earthquake.A. survivedB. surviveC. survivesD. surviving53. The baby felt ____C____ by her parents.A. hateB. loveC. ignoredD. ignore54. There are good chances of ______D______ in this firm.A. moveB. motiveC. motionD. promotion55. She tried to ______D______ our friendship.A. underminedB. keptC. maintainedD. undermine56. The new airport will ______C___ tourism.A. helpedB. useC. facilitateD. benefited57. They were full of ____B____ when they saw my new car.A. jealousB. envyC. pitifulD. loves58. This medicine can ____A____ the pain in no time.A. lessenB. lessC. leastD. little59.He _______A_____ her on her last physics paper.A. complimentedB. complimentC. completeD. completed60. Mrs. Hill is _______B____ on Tom’s marrying Susan.A. awareB. keenC. kindD. keep61. Let me assure you that it was not done ______C_____.A. internationalB. purposeC. intentionallyD. intentional62.The novel _____D_____ the imagination of thousands of readers.A. seizeB. catchC. captureD. captured63. If you yell ___A____ someone, you should apologize.A. atB. outC. ofD. under64. He came over and ____B____ a piece of paper into my hand.A. shoveB. shovedC. shovesD. shoving65. The girl student whose father is a senior engineer used to ___A____ abroad.A. studyB. studyingC. studiesD. studied66.The doctor tried to help ____D____ the function of his limbs.A. storeB. storesC. restoresD. restore67. Women’s social ____B____ has changed much over the years.A. placeB. statusC. landD. work68. It was he ___A___ knew he didn’t need to be afraid to make mistakes at that moment.A. whoB. whomC. whichD. whose69. A dropped cigarette is being ____C____ for the fire.A. firedB. fireC. blamedD. blame70. Advertising is often the most _____D___ method of promotion.A. effectB. affectC. affectedD. effective71.In time you’ll _____A_____ the beauty of this language.A. appreciateB. appreciatesC. appreciatedD. appreciating72. ______B___ is his favorite toy is hard for the kid to decide.A. whoB. whichC. howD. where73. After dinner, I took a ____A____ around the park.A. strollB. divingC. runD. walking74. The boy really enjoyed the useful and ____B____ work in science.A. creationB. creativeC. createdD. creator75. Some professions are _____A_______ with people who have not grown up.A. stuffedB. stuffC. stiffD. stiffed76. Economic crises destroy the capitalist system, and they grow in size and ____A____.A. durationB. duringC. endureD. enduring77. The new airport will ____C_____ tourism.A. helpedB. useC. facilitateD. benifited78. Let me assure you that it was not done _____C______.A. internationalB. purposeC. intentionallyD. intentional79. The girl student whose father is a senior engineer used to ___A____ abroad.A. studyB. studyingC. studiesD. studied80. Advertising is often the most ____D____ method of promotion.A. effectB. affectC. affectedD. effective81. It was he ___A___ knew he didn’t need to be afraid to make mistakes at that moment.A. whoB. whomC. whichD. whosepanies will have to do more than this if they are to _____B___ the earthquake.A. survivedB. surviveC. survivesD. surviving83. The baby felt ____C____ by her parents.A. hateB. loveC. ignoredD. ignore84. If you yell ___A____ someone, you should apologize.A. atB. outC. ofD. under85. Mrs. Hill is ______B_____ on Tom’s marrying Susan.A. awareB. keenC. kindD. keep86. _____A____ college takes hard work!A. SurvivingB. SurviveC. SurvivesD. To surviving87. It is absolutely ____A___ for the human beings to do something to save the earth.A. necessaryB. necessarilyC. unnecessaryD. unnecessarily88. An employer is more ____D____ to choose the candidate with high grades.A. likeB. probablyC. possiblyD. likely89. I don’t like this young woman. She seems a social ___D____.A. flowerB. workerC. negotiatorD. butterfly90. How should this ___B____ girl see the coldness of the letter?A. blindB. innocentC. warmD. pretty91. Be careful not to ___B____ yourself in their local conflicts.A. attendB. involveC. take part inD. participate92. Home prices are holding ____C___ in most regions, and people live with steady income.A. flexibleB. fierceC. stableD. shortage93. He was ______C______ by a newspaper reporter at that time.A. being interviewB. interviewC. being interviewedD. to interview94. They were full of ____C____ when they saw my new car.A. enviousB. envilyC. envyD. envies95. ________C_________, it is a very stable pattern producing results through effort .A. ContraryB. ConverseC. On the contraryD. Diverse96. The teacher doesn’t permit _____B____ in classA. smokeB. smokingC. to smokeD. to have a smoke97. The man in the corner confessed to ___A____ a lie to the manager of the company.A. have toldB. be toldC. being toldD. having told98. I never forget __B____ you for the first time.A. to meetB. meetingC. to have metD. having to be meeting.99. _______A___ a man has, ___________ he wants.A. The more, the moreB. More, moreC. The more, moreD. More, the more100. I see no _____B____ of his success.A. possibleB. possibilityC. possibilitiesD. probable101. He could be ____B____ about everything else in the world, but not about Manet, his loving child.A. visualB. criticalC. favoriteD. essential102. Some see themselves as the provider of ideas, ____C____ others view their role as essentially managerial.A. whenB. thereforeC. whileD. otherwise103. The idea ____A____ to him so much that he took it without hesitation.A. appealedB. interestedC. drewD. attracted104. The teacher evaluated the performance of each of his students who ____B____ evaluated his performance.A. by turnB. in turnC. at turnD. on turn105. Disease _____A____ during the journey and many passengers had to be rushed to hospital for treatment.A. broke outB. broke downC. started offD. started out106. The products have been _____A_____ to strict tests before leaving the factory.A. subjectedB. adjustedC. objectedD. constricted107. Our television set is out of order. Could you come and _____C_____ it for us?A. see throughB. see outC. see toD. see over108. _____C_____ they have taken matters into their hands, the pace of events has quickened.A. As thatB. So thatC. Now thatD. For that109. Our neighbor said if we made more noise he would _____B____ us to the police.A. inform ofB. complain aboutC. report toD. care for110. People working in the government should not _____A______ business affairs that might affect their political decisions.A. engage inB. hope forC. choose betweenD. pick on111. It's not easy to ______B______ to the top in show business.A. make outB. make itC. make upD. make them112. Carter is in charge of the office while I'm ______C______.A. leavingB. on leavingC. on leaveD. on relief113. We must ____B____ our attention on the question of reducing our cost.A. payB. focusC. absorbD. promote 114. Snap judgments, if ___B_____, have usually been considered signs of immaturity or lack of common sense.A. taking seriouslyB. taken seriouslyC. take seriouslyD. to be taken seriously115. Being with his family for a few days, I gained one or two insights ____A____ the reason he behaves the way he does.A. intoB. ofC. onD. off116. ___D___ your age or knowledge of the language, you'll be 100% involved in your studies from the first lesson to the last.A. As a result ofB. In spiteC. Despite ofD. Regardless of117. He said he had caught a bad cold and told me to ____D____ him.A. stay atB. stay upC. stay inD. stay away from118. Good managing of a company ___A_____ great efforts.A. calls forB. calls outC. calls inD. calls at119. I've looked ___C_____ all my papers but I still can't find the contract.A. uponB. outC. throughD. in120. When I'm going out in the evening I use the bike if I can, ___B_____ the car.A. regardless ofB. more thanC. other thanD. rather than121. We can't speak ___A____ our teacher.A. too highly ofB. too high ofC. highly of tooD. to highly of122. No one in our class ____D___ in sports than he.A. are more interestedB. are much interestedC. is much interestedD. is more interested123. As a teacher you have to ____B____ your methods to suit the needs of slower children.A. enlargeB. adjustC. affectD. afford124. ________A___ the hotel before soldiers armed with pistols and clubs charged into the crowd.A. Scarcely had they leftB. Scarcely they had leftC. Scarcely they leftD. Scarcely left they125. In the film, the peaceful life of a monk _____D_____ the violent life of a murderer.A. is compared withB. is compared toC. is contrasted toD. is contrasted with126 I didn't realize the food problem was so _____B___ in this city; with winter coming, many people would starve to death without more help.A. essentialB. criticalC. explicitD. effective127. Female socialization places importance on getting along with others, _____B___ male socialization places importance on becoming independent.。