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Activity 2Fill in the blanks with the proper form of words given in the brackets.1. Being able to hold a conversation does not necessarily mean having effective ______ ( communicate).2. The workers are ( install) a heating system.3. Data warehouse is a representative application of data _ ( integrate).4. This is a good plan. Is it your own (create)?5. The meeting came to a __________ ( succeed) conclusion.

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Activity 3Grammar: Fill in the blanks with the proper form of words given in the brackets.1. My mobile phone is power off. I use yours for a moment?2. One _ pay attention to the telephone etiquette when using telephones in public.3. A more suitable mode of communication like this be found.4. You spend too much time on your smart mobile phone.5. As long as you use Wechat, the payment ___ be made in a second.

*阅读下列程序，分析程序，并写出程序运行结果。1.#include void reverse(int n){if(n>0){printf("%d",n%10);reverse(n/10);}}int main( ){int num;scanf("%d",&num);reverse(num);printf("\n");return 0;}输入：36782

*阅读下列程序，分析程序，并写出程序运行结果。2.#include int sum(int n){if(n==1)return n;else return sum(n-1)+n;}int main( ){int n;scanf("%d",&n);printf("%d",sum(n));return 0;}输入：100

依据题目要求，分析已给出的语句，填写空白。但是不能增行或删行，不能改动程序的结构。1.计算s =12！+ 22! + 32! +42! 。编写两个函数，一个用来计算平方值的函数f1，另一个用来计算阶乘的函数f2。主函数先调用f2，f2再调用f1计算出平方值，然后计算出该平方值的阶乘返回主函数，在主函数中计算累加和。#include int f1(int m){① ;}double f2(int n){int i,r;double c=1;② ;for(i=1;i<=r;i++)c=ci;printf("%d! =%.0f\n",r,c);return c;}int main( ){int i,n;double s=0;printf("n=");scanf("%d",&n);for (i=1;i<=n;i++)③ ;printf("s=%.0f\n",s);return 0;}