The main sources of influenza viruses in lake water are ______, which may stay infections
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If adults continue to tell white lies, kids may be more likely to adopt this strategy of lying to escape______.
向一个栈顶指针为h的带头结点的链栈中插入指针s所指的结点时,应执行()操作。
A. h->next=s;
B. s->next=h;
C. s->next=h;h->next=s;
D. s->next=h->next;h->next=s;