
()是四行程发动机的行程之一。
A、上行程
B、压缩行程
C、下行程
D、中行程


A、上行程
B、压缩行程
C、下行程
D、中行程
Good afternoon, everyone, and thank you for inviting me to your meeting today. I’m here to share what I’ve learned about setting goals and making your dreams come true. This is easier said than done, of course, but my favorite saying is “You can soar on the wings of an 1._______ attitude.” Life has taught me that this is true—with a good attitude you really can achieve great things.
You see, several years ago I was in a very difficult stage of life. Two loved ones had recently passed away, and two of my children were 2. ________ a terrible disease. I felt like life had really 3.________ me for a loop, and some days I was so sad and tired that it was a challenge just to get off the couch. This was not the 4._________ I wanted my life to take, but what could I do? Well, one day I just started walking. That’s right—walking!
That first day I made it a whole ten minutes. Still, I 5._______ myself of that little saying about soaring on wings—“You can soar on the wings of an optimistic attitude”—and I decided to keep trying. The next day I went a little farther, and the next day farther still. Soon my endurance improved, and I felt so good—6. _________ and physically—that I even began running.
In just over a year, I lost 100 pounds and achieved a dream that I had set my 7. _______ on long ago: I completed a marathon! For each mile of hot mountain 8._______, I kept myself going by thinking of a different person who had helped me reach my goal of running the race. I think having them with me through those twenty-six miles helped me finish.
My desire to live a full, healthy life had been my 9._______ for running. After reaching that goal, I wanted to help others, so I wrote a book about my experience and helped to organize a yearly race to 10.________ money for women’s health. It’s hard to believe that just a few years ago I could hardly walk down the street, because now I feel wonderful. I just hope my story can 11._________ others—maybe even some of you—to keep a positive attitude and help yourselves in the same way.