题目

— Sorry, I am late. I got stuck in the highway. — _______. We haven’t started the meeting. Come in and sit down. A. Don’t be late next time                              B. That’s right C. You are welcome                                      D. Never mind 答案：D把正整数按上小下大、左小右大的原则排成如图三角形数表（每行比上一行多一个数）：设ai，j（i、j∈N*）是位于这个三角形数表中从上往下数第i行、从左往右数第j个数，如a4，2=8．若ai，j=2009，则i，j的值分别为______，______．