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    Below is some advice on how to prevent cancer:

    Eat blueberries

    Aside from being a healthy and delicious snack, the blueberries contains pterostilbene, which has important colon(结肠) cancer-fighting. ____. Blueberries also offer a large dose of vitamins C. So at breakfast, try to take in a cup and a half of blueberries in your cereal or yogurt, or mixed with other berries.

    Relax

    ____? Find ways to relax and you may reduce your chances of developing cancer. Purdue University researchers tracked 1,600 men over 12 years and found that half of those with high levels of worry died during the study period. Only 20 percent of the optimists died before the study were completed, while 34 percent of the extremely anxious men died of some type of cancer.____!

    Break a Sweat

    ____. In a study of 29,110 men published in The International Journal of Cancer, men who exercised just once a week had a percent lower risk of prostate cancer than men who didn't work out at all. The better the frequency and intensity of the exercise, the bigger the reduction in risk, according to the study.

    ____

    There's no question that secondhand smoke kills, A recent American Journal of Public Health study showed that nonsmokers working in smoky places had three times the amount of carcinogen（致癌物）in their body than nonsmokers working in smoke-free locations. What's worse, their levels of the carcinogen rose 6 percent for every working hour. Many states have banned smoking in all workplaces, bars and restaurants. The message is clear: Do whatever you can to avoid the cloud of smoke.

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       Last spring I was walking in a park. In front of me there was a mum and her 3-year-old daughter. The little girl was holding a string(线), which had a balloon at the other e____.

       All of a sudden, a l____ wind took the balloon from the little girl. I thought she would cry.

       But, no! As the little girl turned to watch her balloon rise to the s____, she cheerfully shouted out, “Wow!”

       That little girl t____ me something.

       Later that day, I received a phone call from my friend, he told me an unexpected problem. I felt like replying  with “Oh no, what should we do?” But remembering that little girl, I found m____ saying, “Wow, that is interesting! How can I help you?”

       One thing is for sure－life is always going to make us f____ unexpected problems,  however, how to deal with them is our choice. We can choose to be annoyed or i____.

      No matter what the situation is, a “Wow!” will always b____“Oh, no.”

     So the next time you meet one of life’s unexpected guests, remember that little girl and make it a “Wow!” experience. The “Wow!” always works.