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  3. A common complaint for people each year is catching a cold. Many uncomfortable symptoms accompany a cold. Each year, cold suffer

A common complaint for people each year is catching a cold. Many uncomfortable symptoms accompany a cold. Each year, cold suffer

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问题     A common complaint for people each year is catching a cold. Many uncomfortable symptoms accompany a cold. Each year, cold sufferers spend millions to【71】______this recurring problem. Any of two hundred different【72】______could cause a cold. Even though our bodies may become【73】______to a certain cold virus this winter, by next winter our antibodies will probably not recognize it. However, rhinoviruses account for 40% of the colds we catch. Treating that family of viruses would drastically decrease the number of colds we catch each year. Some scientists are now suggesting【74】______the body’s immune responses rather than the virus itself. One researcher suggests that to find a cure for colds we must weaken our immune system’s【75】______.
选项
答案immune
解析 参见第二段第六行。be／become immune to对…免疫。
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