M(NO₃)₂热分解化学方程式为：2 M(NO₃)₂ 2MO+4NO₂↑+O₂↑。加热29.6g M(NO₃)₂使其完全分解，在标准状况下收集11200mL的气体，那么M的摩尔质量是（      ）

过双曲线$\frac{x^2}{a^2}-\frac{y^2}{b^2}=1\left(a>0,b>0\right)$的左焦点F(-c,0)(c>0)作圆$x^2+y^2=\frac{a^2}{4}$的切线，切点为E，延长FE交双曲线右支于点P，若$\overrightarrow{OE}=\frac{1}{2}\left(\overrightarrow{OF}+\overrightarrow{OP}\right)$，则双曲线的离心率为（  ）

默写填空。
①斜晖脉脉水悠悠，                         。      （温庭筠《望江南》） 
②鸡声茅店月，                          。         （温庭筠《商山早行》）  
③                       ，西北望，射天狼。       （苏轼《江城子 密州出猎》
④池上碧苔三四点，                       。          （晏殊《破阵子》）
⑤浊酒一杯家万里，                       。         （范仲淹《渔家傲》）
⑥今夜偏知春气暖，                     。        （刘方平《月夜》）
⑦宫中府中，俱为一体，                 ，                。（诸葛亮《出师表》）
⑧《观刈麦》中与“锄禾日当午，汗滴禾下土”一样，写出了农民劳作艰辛的诗句是  “                      ，                      ”。
⑨辛弃疾在《破阵子·为陈同甫赋壮词以寄之》一词中用“____________，____________”写出了战斗的激烈场面，从气氛上向人们预示着战事的胜利。

    Mildred Webinga Freeman was an English teacher at the new middle school I attended in the ninth grade.She wasn't my1;she was the adviser to the safety patrol（巡逻）on which I2.I loved being around her and3her sense of humor and kind personality.She was4a good listener.

    At the end of the year,she5that she was moving to Florida,and I was very sad.We exchanged6and became pen pals.I could tell her7,and she treated me8respect even though I was a teenager.

    In Florida ,Mrs. Freeman became a Realtor（房地产经纪人）,9she managed to find time to write letters.She wrote10stories and always took my concerns11.She had given me a(n)12invitation to visit,and I missed her so much.When I13to take her up on the14,she answered,"Get your shoes on and your bags15!You are welcome anytime!"

    I spent three weeks with her in Miami.Her16of poetry,music,and creative writing17me to follow these endeavors（努力）.One day18hanging sheets on the clothesline,she19and said,"You know,the sky is fuel for the soul."I had never looked at the20before hearing those words.Later that year,I received a call that Mrs.Freeman had died.