What happened to that brilliant idea that you once had? Did you ignore it because you thought that it was just a little thought? Have you ever considered what that little thought would have become if you had acted on your instincts(本能) or if you had paid more attention to it?

    Imagine a scene, where you are sitting at home watching television or reading a book, suddenly a light bulb is turned on in the dark tunnel of your mind as a thought or an idea crosses your mind. The thought catches your attention but seems so meaningless and you are tempted to abandon it, but wait a minute!

    That thought could be the potential beginning of the success you have so much wished for. As the thought crosses your mind, your senses become alert and you suddenly see a possibility, a solution, or find the answer to a problem whose solution has long escaped you.

    It is almost as if a wise man has whispered the perfect solution into your ear or awakened your senses to a reality, thereby bringing light to your life. It is like finding the last piece of jigsaw puzzle(拼图游戏). This becomes an amazing moment and everything freezes around you as you excitedly try to grasp the practicality of that little but powerful thought.

    Your self-confidence and enthusiasm increase as you become conscious of the great possibilities that can arise if that little thought is acted upon. This becomes the moment to build upon that thought and to put down any ideas that are streaming from that little thought for later review.

    Seemingly meaningless little thoughts or ideas when acted upon have a potential to explode into great projects.

    Many successful projects have been born from the little positive thoughts that were carefully protected and recognized as tickets to great things.

You may have heard people say many times that it just came to me in a flash moment, a small idea or seemingly meaningless thought may cross your mind about something you have been planning to accomplish.

    Don't waste an opportunity to act on a potentially brilliant idea. You don't have to wait for a major idea, or approval from your peers in order for you to act on that little thought. That little thought or idea is the beginning of great things if you decide to follow it through.

    I do not know why I came to the decision to become a loser, but I know I made the choice at a young age. Sometime in the middle of fourth grade, I stopped 1. By the time I was in seventh grade, I was your2degenerate (颓废): lazy, rebellious, and disrespectful. I had lost all social 3 I terminally (不可救药的) followed, what was fashionable.

    Not long after that, I dropped out of school and 4 my downward spiral. Hard physical labor was the5for the choices I made as an adolescent. At the age of twenty-one, I was6 lost and using drugs as a way to deal with the fact that I was uneducated and7 in a dead-end job carrying roof materials up a ladder all day.

    But now I believe in do-overs, in the8 to do it all again. And I believe that do-overs can be made at any point in your life, if you have the right 9 Mine came from a10source.

    It was September 21, 2002, when my son Blake was born. It's funny that after a life of 11responsibility, now I was in charge of something so 12Over the years, as I grew into the title of Dad, I began to learn something about myself13 Blake and I were both learning to walk, talk, work, and play for the first time. I began my do-over.

    It took me almost three years to learn 14to read. I started with my son's books. Over and over, I practiced reading books to him15 I remembered all the words in every one of them. I began to wonder if it was possible for me to go back to school. I knew I wanted to be a good role model,16 after a year-and-a-half and a lot of hard work, I passed my GED test on my son's fourth birthday. This may not sound like 17and I am not trying to get praise for doing something that should have been done in the first place, but all things considered it was one of the18days in my life. Today, I am a full-time college student, studying to become a sociologist.

    Growing up, I19 heard these great turn-around stories of triumph over shortcomings. But I never thought they applied to me. Now I believe it is a (an)20anyone can make: To do it all over again.

①向2mL 0.1mol•L^﹣1 K₂Cr₂O₇溶液中滴入3滴6mol•L^﹣1 NaOH溶液，溶液由橙色变为黄色；向所得溶液中再滴入5滴浓H₂SO₄，溶液由黄色变为橙色；

②向酸化K₂Cr₂O₇溶液中滴入适量Na₂SO₃溶液，溶液由橙色变为绿色：

Cr₂O₇^2﹣+8H⁺+3SO₃^2﹣═2Cr³⁺（绿色）+3SO₄^2﹣+4H₂O．下列分析正确的是（   ）