Once a farmer's daughter began to think and plan while she was carrying her pai1 (桶) of milk from the field to the farmhouse.“I will sell this milk”, she said to herself,“and with the money I can surely buy three hundred eggs. I will put these eggs under hens. And surely two hundred and fifty of them will hatch(孵化). I will feed these chickens, and make them fat. And I will take them to the market when chickens are dear. I will sell them at the market, and with the money, I will buy a new dress. In this dress, I will go to the fair. I shall look so fine that all the young men will ask me to marry them . But I will toss my head, and say NO to them all..”As she said this, she really tossed her head.  Down fell the pail, and the milk spilled all over the ground. That was the end of all her fine plans.

The moral of this story is: Don't count your chickens before they are hatched.

Fill in the blanks according to the pasage. Only one word for each blank.

 A farmer's daughter was once carrying her pail of milk on the farm ____   she began to think and plan. She planned to sell the milk and buy a new dress. She thought that she must____ the men who fell in love with her when she____ the new dress to the fair. ____  of this, she tossed her head and the milk spilled all over the ground. Her fine plans were____ 

如果一个数的倒数是它本身，那么这个数是（     ）

设函数y=f（x）的定义域为D，若对于任意x₁、x₂∈D，当x₁+x₂=2a时，恒有f（x₁）+f（x₂）=2b，则称点（a，b）为函数y=f（x）图象的对称中心．研究函数f（x）=x+sinπx﹣3的某一个对称中心，并利用对称中心的上述定义，可得到f$\left(\frac{1}{2016}\right)$+f$\left(\frac{2}{2016}\right)$+f$\left(\frac{3}{2016}\right)$+$\cdots$+f$\left(\frac{4030}{2016}\right)$+f$\left(\frac{4031}{2016}\right)$的值为（　）