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that which in which of which
it is scarce so scarce is it its scarcity scarcity of it
gold supplies are judged to be shrinking gradually. dentistry demands more gold now than ever before. the yield of gold has been increasing since mid-1950s. gold has been highly valued as a strategic material.
arguments and proofs. personal opinions. convincing examples. factual descriptions.
Surface coatings of gold protect earth satellites from radiation. Most of the world’’s refined gold is used for currency backing. The world’’s largest gold mine is located in South Dakota. The mining of gold can be traced back to the feudal age.
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