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A、Explosions of the volcano can damage diamonds as well. B、Diamonds couldn’t be formed without great heat and pressure of the vo
A、Explosions of the volcano can damage diamonds as well. B、Diamonds couldn’t be formed without great heat and pressure of the vo
admin
2010-08-04
38
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、Explosions of the volcano can damage diamonds as well.
B、Diamonds couldn’t be formed without great heat and pressure of the volcano.
C、The earliest known diamonds were discovered in the River Amazon.
D、Most of early diamond miners became wealthy later.
答案
B
解析
事实细节题。短文第—:段提到"Diamonds were made as a result of great volcanic heat and pressure"(钻石是山于火山巨大的热量和压力形成的。)由此可知,没有这两个因素,火山就不可能形成。
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0
大学英语四级
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