地槽是地壳上活动性不太强烈的地区.
参考答案：错
单项选择。
I a computer, but Danny doesn't one. [ ]
A. has; has
B. have; have
C. have; has
D. has; have
若有定义：int k;，下列程序段的输出结果是【 】。 for(k=2;k＜6;k++,k++)printf("++%d"k)；
