非零实数x、y满足（x2+2009-x）（y2+2009-y）=2009，则x+ 发布时间：2017-04-16 22:55 │ 来源：www.tikuol.com 题型：填空题 问题： 非零实数x、y满足（x2+2009-x）（y2+2009-y）=2009，则x+2008y2008x+y=______．
题型：填空题 完形填空 The friendship between us never fades. Mary Allen was my best friend-like a sister I never had. We did everything together: piano lessons, movies, swimming, horseback riding, and so on. When I was 13, my family moved. Mary and I __1__in touch through letters, and we saw each other on special __2__- like my wedding and Mary's. Soon we were __3__with children and moving to new homes, and we wrote less. One day a card that I sent came back,__4__"Address Unknown." I had no idea how to __5__Mary. Over the years, I thought of Mary often. I wanted to __6__stories of my children and then grandchildren. I need to share my __7__when my brother and then my mother died. There was an empty place in my heart that only a friend like Mary could __8__. One day I was reading a newspaper __9__I notice a picture of a young woman who looked a lot like Mary and whose last name was Wagman- Mary's married name. "There must be thousands of Wagmans,"I thought,__10__I wrote to her anyway. She called as soon as she got my letter. "Mrs. Tobin!" she said excitedly, "Mary Allen Wagman is my mother". Minutes later I heard a voice that I __11__at once, even after 40 years. We laughed and cried and asked about each other's__12__. Now the empty place in my heart is filled, and there is one thing that Mary and I know for sure: We won't lose each other again!( )1. A. got ( )2. A. places ( )3. A. comfortable( )4. A. saying ( )5. A. know ( )6. A. share ( )7. A. news ( )8. A. stay ( )9. A. when ( )10. A. and ( )11. A. realized( )12. A. future B. kept B. occasionsB. careful B. writing B. stop B. speak B. sorrow B. hide B. while B. since B. received B. progress C. lost C. festivalsC. easy C. read C. find C. write C. stories C. fill C. if C. but C. contactedC. lives D. fell D. things D. busy D. told D. help D. remember D. failure D. live D. though D. so D. recognizedD. weddings 查看答案