请结合材料1至材料4，概括当前市场秩序中主要存在哪些问题，并说明这些问题在材料中是如何体现的。
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根据上述材料，尤其是材料5，结合所学知识简要说明现阶段应采取哪些措施来整顿和规范市场秩序。
When did Washington become the first president of the U.S.A.？He became the first president
If two typists can type two pages in two minutes, how many typists will it take to type 18
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