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  3. Since April, a new flu named A-Hl Nl (originally called swine flu)has affected over 100, 000 people in more than 40 countries. S

Since April, a new flu named A-Hl Nl (originally called swine flu)has affected over 100, 000 people in more than 40 countries. S

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问题     Since April, a new flu named A-Hl Nl (originally called swine flu)has affected over 100, 000 people in more than 40 countries. Symptoms of swine flu are similar to those of regular seasonal influenza. People with swine flu often get a fever, headache, cough, sore throat, body aches, vomiting , chills and fatigue. Study has showed, that swine flu is a virus that usually affects pigs but appears to have acquired the ability to pass from person to person, though it’s unclear how easily it can be transmitted this way.
    Usually, the best way to protect yourself contracting it or other infectious diseases is with a dose of common sense: Wash your hands frequently with soap and warm water, cover your coughs and sneezes and stay home from work or school if you feel ill. These guidelines may seem basic, but they’ re effective in preventing the spread of infections. Richard Besser, acting director of the U. S. Centers for Disease Control and Prevention(CDC), said, "Control of an outbreak of infectious disease is a shared responsibility. It’s important that individuals realize they have a key role to play in reducing their own likelihood of getting infected. "
    If you become sick, stay home for the period of infection, which is typically seven days, although children may be contagious for longer. Once on the mend, don’ t return to work or school until at least a day after symptoms have disappeared, Besser said. "Wearing a face mask when out in public isn’t warranted(必要)in most cases, "he said. "I know some people feel more comfortable having a mask, and there are certain circumstances where that may be of value, but I would rather people really focus on hand-washing, as well as covering coughs and sneezes. "
According to the passage, what do we know about swine flu?
选项 A、Swine flu call be transmitted easily among pigs but not among people
B、Swine flu is a virus that has acquired the ability to pass from person to person
C、People with swine flu often get a stomachache, headache and toothache.
D、Symptoms of swine flu are different from those of regular seasonal influenza.
答案B
解析
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