首页
登录
职称英语
[originaltext] The diamond is considered the most famous, elegant and valuab
[originaltext] The diamond is considered the most famous, elegant and valuab
游客
2024-05-08
17
管理
问题
The diamond is considered the most famous, elegant and valuable jewel in the world. It is the hardest substance found in nature. Its hardness and high dispersion of light make it useful for industrial applications and jewelry.
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-millions of years ago-by a number of great volcanic explosions. It is in the narrow volcanic pipes that diamonds are found. They are also found among the sand and stones of certain riverbeds, and in a few places on the floor of the sea, for they were washed down the mountainsides by the rain.
Diamonds are very 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. [34]Most of these early diamond miners died of illness or were lost forever in the great forests.
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 world-and from South Africa.
选项
A、They can be easily damaged.
B、They are formed with great volcanic heat and pressure.
C、They are brought up to the surface by earthquakes.
D、They can be found everywhere.
答案
B
解析
短文说,钻石是火山热和压力的产物。所以B正确。
转载请注明原文地址:https://tihaiku.com/zcyy/3589034.html
相关试题推荐
[originaltext]Scientistshavediscoveredthatplantsthemselvesproducemany
[originaltext]Scientistshavediscoveredthatplantsthemselvesproducemany
[originaltext]Scientistshavediscoveredthatplantsthemselvesproducemany
[originaltext]InasmalllaboratoryattheMedical.UniversityofSouthCar
[originaltext]ManychildrenactinTVshows.Theyworkseveralhoursevery
[originaltext]M:WhataboutthispostofRetailManagerwe’regoingtoadvertis
[originaltext]M:WhataboutthispostofRetailManagerwe’regoingtoadvertis
[originaltext]M:WhataboutthispostofRetailManagerwe’regoingtoadvertis
[originaltext]M:Hi,Mandy.How’severythinggoing?W:Nottoogood,Isuppose.
[originaltext]MaryKatherineGoddardwastheonlywomanwhosignedonthe
随机试题
[originaltext]Ihaveanannouncementtomakebeforewestartclass.I’mloo
[originaltext]I:Goodmorning,everyone.TodayI’dliketointroduceProfessor
Curioustouristsandreportersfromaroundtheglobeare______uponthepeaceful
[originaltext]M:Myfathercandocoolingcarpentry,andabitofgardening.W
破碎机操作前必须对设备机械部分、电气部分及作业环境进行仔细检查,穿戴好完整的劳动
重型击实试验与轻型击实试验的本质区别是()。A.击实次数 B.击实锤重量
处方中,缩写词“tid.”表示的含义是A:每天3次 B:每3天1次 C:每天
某妇女53岁,绝经3年,出现阴道不规则流血,疑为子宫内膜癌。确诊的最可靠方法为(
左边的立体图形是立方体中挖出一个圆锥台孔后形成的,如果从任一面剖开,以下哪一个不
根据《建设工程项目管理规范》,项目风险管理的程序是( )。A.风险识别、风险分析
最新回复
(
0
)