“权为民用,纵然是清风两袖,自当流芳百世传佳话；利为己谋,即便有豪宅千倾,也会遗臭万年殃后人。”这副对联给我们的启示是

已知：在平面直角坐标系中，抛物线 $y=-\frac{1}{4}{x}^2+bx+3$ 交x轴于A、B两点，交y轴于点C，且对称轴为x=﹣2，点P（0，t）是y轴上的一个动点．

实验室中常采用如图所示装置进行石油分馏，请回答下列问题：

根据短文的理解，选择正确答案。    In two days, I will be turning 30. And I was not looking forward to a new decade (十年). I was afraid that the best years of my life were behind me.
    One day, I met with my friend Nicholas. He was a 79-year-old man. He noticed something was different about me and asked if anything was wrong. I told him what I was anxious (焦虑) about and asked him: "What was the best time of your life?"
    Without hesitation, Nicholas replied: "Well, Joe, when I was a child in Austria and everything was taken care of for me, that was the best time of my life."
    "When I was going to school and learning the things I know today, that was the best time of my life."
    "When I got my first job and got paid for my work, that was the best time of my life."
    "When I met my wife and fell in love, that was the best time of my life."
    "World War Ⅱcame, and my wife and I had to leave Austria to save our lives. When we were together and safe on a ship, that was the best time of my life."
    "When I became a young father and watched my children grow up, that was the best time of my life."
    "And now, Joe, I am 79 years old. I have my health, I feel good and I am just as in love with my wife as I was the day we met. This is the best time of my life.

We had to have breakfast q____ because we had little time left.