diff --git a/CFree/▼配套习题解析/▼02 线性表/▼习题测试文档-02/Question-2.15-main.c b/CFree/▼配套习题解析/▼02 线性表/▼习题测试文档-02/Question-2.15-main.c
index b740f9d..33d746b 100644
--- a/CFree/▼配套习题解析/▼02 线性表/▼习题测试文档-02/Question-2.15-main.c	
+++ b/CFree/▼配套习题解析/▼02 线性表/▼习题测试文档-02/Question-2.15-main.c	
@@ -43,23 +43,27 @@ Status Algo_2_15(LinkList ha, LinkList hb, LinkList *hc)
 {
 	LinkList pa, pb;					//pa��pb�ֱ�ָ��ha��hbͷ��� 
 
+    // ȷ��ha��hb������
 	if(ha && hb)
 	{
 		pa = ha;
 		pb = hb;
 		
+		// Ϊ�����Ч�ʣ���Ҫ�ȱ�����ͬ�IJ���
 		while(pa->next && pb->next)
 		{
 			pa = pa->next;
 			pb = pb->next;
 		}
 		
-		if(!pa->next)
+		// ���ha�Ѿ�������ͷ�ˣ���hb��ʣ�ࣨha<hb�� 
+		if(!pa->next && pb->next)
 		{
 			*hc = ha;
 			pa->next = hb->next;		
 		}
 		
+		// ���hb�Ѿ�������ͷ�ˣ�ha������ʣ�࣬Ҳ����û�У�ha>=hb��
 		if(!pb->next)
 		{
 			*hc = hb;