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Video-Beg-Formation of a Pearl | Secret Life of Pearls
J**
2021-09-16 ¿ÀÀü 11:46:58
168
Formation of a Pearl | Secret Life of Pearls
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to watch the video
Vocabulary:
1. Pearl = a hard, lustrous spherical mass, typically white or bluish-gray, formed within the shell of a pearl oyster or other bivalve mollusk and highly prized as a gem.
2.Mollusk = an invertebrate of a large phylum which includes snails, slugs, mussels, and octopuses. They have a soft unsegmented body and live in aquatic or damp habitats, and most kinds have an external calcareous shell.
3.Nacre = also known as mother of pearl,
Questions:
1. What is the video about?
2.What is Australia's South Sea Pearl Oyster also known as?
3.What can a mollusk produce? What are the mollusks named in the video?
4.what is the most valuable gem known to mankind? How much did it cost for a single pearl in recent years?
5.Do Koreans love pearl? Why or why not?
÷ºÎÆÄÀÏ
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