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
2024-01-02
23
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/3328134.html
相关试题推荐
______.widelyusedinthechemicalindustry,sodiumcarbonateisprincipallyco
Thecurrentconcentrationofcarbondioxideintheatmosphereisabout360p
Thecurrentconcentrationofcarbondioxideintheatmosphereisabout360p
Thecurrentconcentrationofcarbondioxideintheatmosphereisabout360p
"Whenpeoplesucceed,itisbecauseofhardwork.Luckhasnothingtodowit
Becauseof______,mastiffbatsrequireconsiderablespacetotakeoffinflight.
ABecauseoftheshortBgrowingseason,treesathighaltitudesmayCnothaveeno
AllastronautsAcarryapassportBduringtheyaretravelinginspaceCbecauseth
Motivationisadifficultsubject______becausesomanydifferentfactorsinfluen
ABecauseoftheirhighrateofpredation,BitisnotunusualforrabbitsCproduc
随机试题
Job-hoppingNowadays,theone-companyindivi
Thebusinesscycleiscomposedofmanyphasesandoneofthemistheexpansi
根据建筑室内火灾温度随时间的变化特点,通常将建筑火灾发展过程分为()。A.火灾
下列行为中,属于互联网出版的是()。A.在门户网站的聊天室发表意见 B.学报
C只将A和C比较,A为强酸弱碱盐,C为一元弱酸,根据一元弱酸和强酸碱盐的
建设工程质量监督管理,可由建设行政主管部门委托的建设工程()具体实施。A.质量管
初诊接待中,心理咨询师的主要工作在于()。 (A)解决求助者的困扰(B)提供
(2015年真题)某学校退休教师某月取得的收入中,不需要缴纳个人所得税的是()。
(2020年真题)关于所有权的说法,正确的有()。A.所有权人对自己的不动产,
2013年8月23日,向A公司销售甲产品2000件,单价为50元(不含税),销售
最新回复
(
0
)