A. can be easily formed when one is young B. cannot be long- lasting C. are not rare for everyone D. are rare for most people 参考答案:D 答案解析:[试题分析] 细节推理题。 [详细解答] 见第五段第二句,“Close friends can be farmed at any stage in one's life but they are
第24题: [单项选择]下列程序的运行结果是 #include"stdio.h" main( ) int x=-9,y=5,z=8; if(x<y) if(y<0)z=0; else z+=1; printf("%d/n",z); A. 6 B. 7 C. 8 D. 9 参考答案:D 答案解析:[解析] if...else语句的执行过程如下,首先计算if后面一对圆括号内表达式的值,若表达式的值为非0,执行if子句,然后跳过else子句,去执行if语句后的下一条语句;若表达式的值为0,跳过if