题目

Americans are proud of their variety- and individuality, yet they love and respect few things more than a uniform. whether it is the uniform of an elevator operator or the uniform of a five-star general. Why are uniforms so popular in the United States?      Among the arguments for uniforms, one of the first is that in the eyes of most people they look more professional than civilian (百姓的) clothes. People have become conditioned to expect superior quality from a man who wears a uniform. The television repairman who wears uniform tends to inspire more trust than one who appears in ci请将下列传染病连到对应传播途径上呼吸道传染病                         A 沙眼消化道传染病                         B 非典型肺炎血液传染病                           C甲型肝炎体表传染病                           D 艾滋病