第3题: [单项选择]Rarely () by so many students. A. so much time has been wasted B. has so much time wasted C. has so much time been wasted D. has wasted so much time 参考答案:C 答案解析:
第14题: [单项选择]下列程序执行后,j的值是 public class Testggg public static void main(String args[ ]) int j=1; for(int i=7;i>0;i-=2) j * =2; System.out.println(j); A. 15 B. 1 C. 32 D. 16 参考答案:D 答案解析:解析:科用for循环语句求2的4次幂。一般情况下迭代部分都用i++或i- - ,但在这里用的是i - =2,需要留意。