Who Is The First Person Invented Mirror?

The Romans were the first to invent the mirror. In Mesopotamia mirrors coated with copper were manufactured as early as 4000 BC, in Egypt from around 3000 Bc and in China from around 2000 Bc. Metal-coated mirrors were invented in sidon, Lebanon in the 1st century AD. Romans also made mirrors by pouring molten lead over blown glass. The history of mirrors dates back to the time when people used to see their reflection in ponds and lakes. Eventually they came up with the idea of making mirrors out of glass and metals.

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The designation of ``Key School'' exists for selected schools at every educational level in China: elementary, secondary and higher. In addition, there are various levels of the ``key'' designation itself: There are national key institutions, provincial or municipal key institutions, and county or district key institutions. Key schools all enjoy priority funding as well as the privilege of recruiting the best students. At the elementary and secondary levels, this concept is similar to that of a ``magnet'' or ``college preparatory'' school in the United States. Entry into such schools is based on examination and academic promise and achievement. For such schools, success is usually measured in terms of the percentage of its graduates entering colleges and universities, especially the key colleges and universities. The philosophy has been that giving a limited number of schools, colleges and universities priority in allocating limited resources, then the t...

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