首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
1 Because a diamond is made of pure carbon, it has an immensely strong crystal structure, making it the hardest of all minerals.
1 Because a diamond is made of pure carbon, it has an immensely strong crystal structure, making it the hardest of all minerals.
admin
2019-07-01
50
问题
1 Because a diamond is made of pure carbon, it has an immensely strong crystal structure, making it the hardest of all minerals. Evidence suggests that diamonds were formed deep within the earth, and some stones may be three billion years old. Alluvial diamonds, those recovered from river gravel, can be carried long distances in rough water with other rocks. Diamond-bearing gravel is the result of one of nature’s sorting processes. Many of the diamonds found in gravel are of gem quality because flawed or fractured stones are more likely to be broken up and eroded away.
2 A diamond shines with great luster and fire, properties that are best revealed in the cut known as "brilliant." The brilliant cut dates from the seventeenth century and remains the most popular cut today because it enhances the brilliance of the gem with the least possible sacrifice of weight. It typically has 58 facets, but sometimes up to 104, and resembles two pyramids set base to base.
3 Most natural diamonds are nearly colorless, but truly colorless diamonds are rare. A few stones are found of all colors in the spectrum, and good-quality ones are known as "fancies." Diamonds of exceptional beauty and rarity are highly prized. Some have long, recorded histories, and others have inspired fantastic legends. The deep blue Hope diamond has a reputation for bringing bad luck; however, the sinister stories about it are untrue. At more than 45 carats, the Hope is one of the world’s largest diamonds and is apparently flawless.
The word brilliance in paragraph 2 is closest in meaning to
选项
A、brightness
B、rarity
C、softness
D、fragility
答案
A
解析
Brilliance means brightness in this context. Clues: . ..shines with great luster and fire....
转载请注明原文地址:https://kaotiyun.com/show/rlfO777K
0
托福(TOEFL)
相关试题推荐
ChooseTWOletters,A-E.WhatTWOactivitiesonthelastDigitalInclusionDaydidparticipantsdescribeasuseful?Alearningt
Completethenotesbelow.WriteONEWORDONLYforeachanswer.DevelopmentStudiesDevelopmentStudiesattemptstounderstand-
EngineeringforsustainabledevelopmentTheGreenhouseProject(Himalayanmountainregion)ProblemShortgrowingseason
organic本题询问该项目的好处。录音原文中的farmingpractices是题目farmingmethods的同义表述,故空格处填入organic“有机的”。
ThecityofMemphis,Tennessee,was(a)importantConfederate(militarycenter)duringtheAmericanCivilWarand(servedas)th
A、Theimportanceofanthropologytomodernsociety.B、Agoodsourceofinformationaboutasociety.C、Attitudestowardculturei
A、Howamberchangesshapewhenheated.B、Howclearamberis.C、Howcommonisaroundtheworld.D、Howeasilyambercanbreak.DWh
"ResourcesandIndustrialisminCanada"→Whilethemuch-anticipatedexpansionofthewesternfrontierwasunfoldinginacco
Anorangeisless______thanapineapple.
随机试题
以下何种情况的房性心动过速需紧急处理
结核菌素试验为阳性反应,下列判断错误的是
根据《测绘成果质量检查与验收》,下列关于质量问题处理的说法中,正确的是()。
某新建水闸工程,闸室为3孔,采用胸墙式结构,底板顶高程21.00m,闸墩顶高程29.50m,闸门为平面钢闸门,启闭机平台设置在排架上,平台顶高程39.50m。施工过程中有如下事件。事件1:为加强安全施工管理,施工项目部成立了安全管理领导小组,并配备了专
在计算营运指数时,其计算过程中的非付现费用涉及( )。
Whatareyougoingtodoifyouareinaburninghouse?Howwillyouescape?Doyouknowhowtosaveyourself?Pleasereadthef
当铃声由中性刺激物转化为食物的信号刺激,意味着动物建立了()
[*]
flying
Since1895theNationalTrusthasworkedforthepreservationofplacesofhistoric(1)_____andnaturalbeautyinEngland,Wales
最新回复
(
0
)