2. 外语
  3. There are some steps you can take yourself to avoid catching a cold. Contrary to popular belief, colds are not caused by【B1】____

There are some steps you can take yourself to avoid catching a cold. Contrary to popular belief, colds are not caused by【B1】____

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问题     There are some steps you can take yourself to avoid catching a cold. Contrary to popular belief, colds are not caused by【B1】______ to severe weather. Colds are caused by viruses【B2】______ in the body, and you’re better off out on the ski slopes or even waiting for the bus on a snowy day than you are in a【B3】______ warm room surrounded by friends, co-workers, or fellow students, who just may be passing the virus around. If you feel a chill when you’re coming down with a cold, you’re already sick. A chill is an early【B4】______  : it’s the cold that caused the chill, not the other way around.
    While the virus can spread through droplets【B5】______ into the air when a cold-sufferer coughs Or sneezes, surprisingly, this is not the most common route of【B6】______ . Numerous studies have now shown that the【B7】______ majority of colds are "caught" by hand contact. A cold-sufferer rubs her nose,【B8】______ transferring the virus to her hand. Then a friend comes to visit.
    "Don’t kiss me," she cautions, so the friend steps back and presses her hand. The friend then wipes her own nose or eye—and several days later is stricken with cold.【B9】______ .
    Cold viruses also can be transferred to objects—telephones, towels, plates—and【B10】______ . Frequent hand-washing—on the part of the cold-sufferer as well as other members of the household—【B11】______ .
【B10】
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答案remain infectious for up to three hours
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