数列{a_n}中，a_n＝－n²＋11n，则此数列最大项的值是____．

根据短文内容，从A、B、C、D四个选项中选取正确答案填空。

A

    Two students of the World Wide Friends Club write to their friends on the Internet.

    Hello, friends! My 1 is Andy. I have black hair and I 2 glasses. My friends say I am cool with them. I am in 3 this year. I like all my lessons, 4 I'm not good at Maths. I love football very much. I often play football with my classmates. 5 are all nice. I love them.

    Hi, I 6 Mary. I study at a middle school. I am thirteen years old. I 7 black hair and brown eyes. This is my classroom. There are 50 small 8 and chairs in it. On the back wall (墙)9a kite. It is my work. On the teacher's desk, there are some flowers. They are 10 our teachers. My classroom is a big and nice room.

在对溺水者进行人工呼吸前，为什么要先清除他口、鼻内的污物（　　）

古诗文默写填空
①_________                          ______，奉命于危难之间。(诸葛亮《出师表》)
②乱花渐欲迷人眼，___________               ___________。(白居易《钱塘湖春行》)
③剪不断， 理还乱，是离愁，________                  ________。(李煜《相见欢》)
④大漠孤烟直，_______________                       _______。(王维《使至塞上》)
⑤________                 小桥流水人家，古道西风瘦马。(马致远《天净沙·秋思》)
⑥_______                                 _________，其不善者而改之。(《论语》)
⑦烽火连三月，__________                           ____________。(杜甫《春望》)
⑧不畏浮云遮望眼, _________                  _____________。(王安石《登飞来峰》)
⑨李商隐在《夜雨寄北》中想象将来与远人欢聚的情景，表达渴望与远人早日相见的真挚而深厚的感情的诗句是 “________ ______，___         ______”。