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[originaltext] The diamond is considered the most famous and valuable jewel
[originaltext] The diamond is considered the most famous and valuable jewel
游客
2024-02-25
51
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问题
The diamond is considered the most famous and valuable jewel in the world.
Diamonds were made as a result of great volcanic heat and pressure.
A volcano is a mountain with a hole in the top. When a volcano is very active it sometimes explodes and causes great damage.
Diamonds were pushed towards the surface of the earth by a number of great volcanic explosions millions of years ago. It is in the narrow volcanic pipes that diamonds are found. They are also found among the sand and stones of certain river beds, and in a few places on the floor of the sea for they were washed down the mountain sides by the rain.
Diamonds are quite rare. There are not many diamond pipes or diamond-producing rivers in the world. During the last century adventurers from Europe went to Brazil, because they had heard that there were diamonds in the River Amazon. Many of these early diamond miners died of illness or went lost forever in the great forests. But some returned home rich.
The earliest known diamonds were found in India many centuries ago. The most recent and exciting discoveries have been made in eastern Russia. But most of the world’s diamonds now come from the Congo, from Tanzania--which has, the largest diamond mine in the word--and from South America.
选项
A、Diamond Hunting.
B、Diamond--A Precious Stone.
C、Diamond--Symbol of Fortune.
D、How is Diamond Formed and Found.
答案
D
解析
主旨大意题。本文首先讲述了钻石的形成,并指出在哪些地方可以找到钻石;然后讲到钻石弥足珍贵,许多早期的钻石矿工为寻找钻石付出了生命的代价;最后介绍了过去和现在钻石的发现地。根据文章内容不难得出,本文主要讲钻石的形成和发现。
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