首页
登录
职称英语
1 Because a diamond is made of pure carbon, it has an immensely strong crystal s
1 Because a diamond is made of pure carbon, it has an immensely strong crystal s
游客
2025-02-04
35
管理
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. [br] The passage mentions all of the following about diamonds EXCEPT their
选项
A、hardness
B、formation
C、appearance
D、price
答案
D
解析
The passage does not mention the price of diamonds. All of the other answers are mentioned: ...the hardest of all minerals; ...diamonds were formed deep within the earth...; ...great luster and fire...; ... brilliance...; ... nearly colorless...; ... exceptional beauty....
转载请注明原文地址:https://tihaiku.com/zcyy/3942694.html
相关试题推荐
ABecauseoftheshortBgrowingseason,treesathighaltitudesmayCnothaveeno
Individualspurchasealotoftechnologyforthehomebecause______hasbecomeso
Avirusisharmfulbecause______reproducesbykillingthehostcell.A、itB、itis
Motivationisadifficultsubject______becausesomanydifferentfactorsinfluen
AsasourceofApower,electricityBhadnorivalbecauseitisCclean,silent,a
1Becauseadiamondismadeofpurecarbon,ithasanimmenselystrongcrystals
Coalisclassifiedasafossilfuelbecause______ismadefromcompressedplant
Ofallthesenses,itis______thattriggersthestrongestmemoriesandemotions.
Becauseitdecomposesviolentlywhendisturbed,______mustbehandledcautiously
Althoughheat,water,orpressureAtheycanaffecttheBformationofacrystal,
随机试题
销售条件()信用[br]数量折扣()信用分析EA
8个月婴儿,低热、咳喘1天,吃奶时呛咳,哭闹时唇周轻度发绀。查体:体温38℃.精
一患者,在进食数小时内出现呕吐、腹泻、腹痛,应考虑的疾病是()A.急性
金融市场最重要的参与者是( )。A.政府部门 B.工商企业 C.金融机构
呈长棒状,花头外表面紫红色或淡红色,花头撕开后,有白色丝状绵毛的花类药材是A.金
螨对人体的危害主要是A.作为媒介生物传播疾病B.误食后引起消化道疾病C.变应原成
当年韩愈被贬到潮州做刺史,虽然只有8个月的时间,却不怕费力,大力兴办州学,捐出所
基金的流动性风险表现在()。A.基金组合中股票价格的波动 B.基金组合中债券价
A.柔红霉素 B.氟尿嘧啶 C.博来霉素 D.白消安 E.卡培他滨弥漫性
自动喷水灭火系统的调试应包括()。A.水源测试 B.消防水泵调试 C.
最新回复
(
0
)