定义平面向量之间的一种运算“⊙”如下：对任意的向量a=（m，n），b=（p，q），令a⊙b=（m+p，n﹣q），已知a=（cosθ，3），b=$\left(\sin \theta ,3+\sqrt{2}\sin \theta \right)$（θ∈R），点N（x，y）满足$\overrightarrow{ON}$=a⊙b（其中O为坐标原点），则|$\overrightarrow{ON}$|²的最大值为（　　）

读诗《游山西村》判断下列说法的正误。

“丰年留客足鸡豚”的“足”写出了农家待客的热情。

根据括号内的汉语提示，完成句子。(每空一词)
The young man found it difficult to have dinner because some of his ____ (牙齿)had been pulled out.
Tom and Linda have been____ ( 结婚) for ten years, but they've never quarreled.
If you want to become a good Marathon athlete, you must practice ____ (跑步) every day.
He manages over 100 big companies, He is considered to be one of the most ____ (成功的) businessmen in China.
Their answers to the question were not the same, that's to say, they answered the question____ (不同地).
When you communicate with your American e-pal on the internet, the e-mails are supposed to be____ (写) in English.