分析下列程序： #include＜stdio．h＞ main() { int *p1，*p2,*p；int a=6，b=9；p1=&a；p2=&b；if(a＜b){p=p1；p1=p2；p2=p；}printf("%d，%d"，*p1，*p2)；printf("%d，%d"，a，b)； } 程序的输出结果为( )。

A．9,66,9

B．6,9 9,6

C．6,9 6,9

D．9,69,6

I recommended strongly that you ______a more powerful computer, even though your brother recommended ______ an ordinary one.

A．bought; to buy

B．buy; buying

C．would buy; to buy

D．bought; buying