通读下面短文，掌握其大意，然后在各小题所给的四个选项中，选出一个最佳答案。When you look at me now, you won't believe that I once weighed over 300 pounds. Yes, I used to be a really 1 girl. I never worried about it until I had a medical examination one day.
The doctor told me that I was having heart trouble. He said it would be 2 if I could lose some weight. Then I decided to make a 3 .
After a year and five months, I lost 104 pounds. I didn't have any expensive food, medical treatment or camp- style exercise. So what was the secret to my 4 ?
First, I looked through the Internet for some 5 on losing weight. Of course, I saw many advertisements(广告), but I bought nothing. The only thing I did was change my bad6 . I stopped having drinks with too much sugar and 7 my love for sweet cakes. Now I have got used to eating a lot of green vegetables and using vegetable oil only. I 8 eat after 6:30 p. m. because it's unhealthy to have a late dinner. Also, I 9 for 15 to 20 minutes five days a week to keep fit.
People sometimes say, " You don't need to tell me what to do. I've known it already!" The fact is that knowing what to do and doing what you know are completely 10 . The important thing is to know what to do and then keep doing it.
