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    As A/H1N1 continues to spread, experts from the Centers for Disease Control to the World Health Organization to neighborhood doctors are calling on the people to practice smart flu prevention techniques. Here are some tips to keep body improved and immune（免疫）system ready to fight infection.
    Wash Your Hands
    And wash them often, in hot soapy water, and for the amount of time it takes you to sing “Happy Birthday” twice.
    Get Enough Sleep
    This means slightly different things to different people, but try to get 8 hours of good rest each night to keep your immune system in top flu-fighting shape.
    Keep Hydrated
    Drink enough water each day to clear poisonous matter from your system and keep up good moisture（湿度）production in your body.
    Eat Immune-Improving Foods
    Keeping you body strong and ready to fight infection is important in flu prevention. Fatty foods can slow your metabolism（新陈代谢）, make you feel inactive, and weaken your immune
    system. So stick with whole grains, colorful vegetables, and vitamin-rich fruits.
    Avoid Alcohol
    Alcohol is likely to decrease your resistance to infections and further damages the immune system. So avoid alcoholic drinks to keep your immune system strong.
    —————————————？
    Proper exercise-for example walking for 30-40 minutes 3-4 times a week-supports the immune system by increasing circulation, oxygenating the body, removing poisonous material through sweat, and reducing tension and stress. So get moving!
    Avoid Contact with Sick People
    If you’re coughing or sneezing, cover your mouth(and then wash your hands),and if you have to be around someone who is sick, try to stay a few feet away from them and avoid physical contact.
    Know When to Get Help
    A/H1N1 can look like regular flu, so don’t feel like you necessarily are infected if you’re exhibiting flu-like symptoms（症状）. But do go to your doctor if you live in an area where there are recorded cases, or if your symptoms are very serious.
    小题1:To fight A/H1N1 infection, it’s helpful for us to_______ .
    A．sing “Happy Birthday” while washing hands
    B．eat more fatty foods and colorful fruits
    C．keep away from alcoholic drinks
    D．refuse communication with patients
    小题2:A suitable title for paragraph 7 might be _______.
    A．Support the Immune SystemB．Keep Physically Active
    C．Get Enough Sweat D．Walk to Reduce Stress
    小题3:The passage seems to suggest that we should_______.
    A．get enough sleep after eating fatty foods
    B．wash hands with soap after a cough or sneeze
    C．drink more water after drinking alcohol
    D．see a doctor immediately if you have flu-like symptoms
    小题4:What can help clear poisonous matter from the body?
    A．Washing your hands.B．Eating fatty foods.
    C．Getting enough sleep.D．Drinking enough water.

    小题1:C
    小题2:B
    小题3:B
    小题4:D

    小题1:根据Alcohol is likely to decrease your resistance to infections and further damages the immune system. So avoid alcoholic drinks to keep your immune system strong. 描述可知选C。
    小题2:这一点主要讲述了加强体育锻炼的问题，故选B，坚持体育锻炼。
    小题3:根据If you’re coughing or sneezing, cover your mouth(and then wash your hands),描述可知选B。
    小题4:根据Drink enough water each day to clear poisonous matter from your system 描述可知选D。
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