以下程序的输出结果是 public class Test1{ public static void main(String args[]){ int sum=0; int ko[][]={{1,2,3},{4,5,6},{7,8,9}}; for(int n=0;n<3;n++) for(int m=0;m<3;m++) sum+=ko[n][m]; System.out.println("sum="+sum); } }
【简答题】The purpose of the passage is to _____. B) introduce some useful techniques of language learning C) teach people how to learn English D) compare language teaching with language learning