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
33
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 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://kaotiyun.com/show/MlfO777K
0
托福(TOEFL)
相关试题推荐
Choosethecorrectletter,A,BorC.Bobbychoosesfootballasprojecttopicbecause
Choosethecorrectletter,A,BorC.Whatwasthemostdifficultproblemwhenthecompanywasfounded?
ChooseTWOletters,A-E.WhichTWOthingsaremostpopularamongusers?Achildren’sbooksBtextbooksCcomputergamesDtoysE
Completethenotesbelow.WriteONEWORDONLYforeachanswer.EffectsofurbanenvironmentsonanimalsIntroductionRecenturba
StrategiesforeffectiveuseoflecturesDosome【L25】________【L26】________andsitwhereyoucanseeandheareasily.Be【L27】___
Whichattitudeisassociatedwiththefollowingpeopleduringtheconversation?ChooseSIXanswersfromtheboxandwritetheco
ElementaryschoolsintheUnitedstatesprovideformaleducation______arithmetic,science,socialscience,andcommunications
Whatdoesthepassagemainlydiscuss?Accordingtothepassage,howdidtheshifttoagriculturalsocietiesimpactpeople’sfa
ThefirstpeoplestoinhabitwhattodayisthesoutheasternUnitedStatessustainedthemselvesashuntersandgathers.Sometimes
Afterdaysofnegotiations,theunionfinallyreachedaprovisionalagreementwithmanagement.
随机试题
It’soneofourcommonbeliefsthatmiceareafraidofcats.Scientistshavelongknownthatevenifamousehasneverseenaca
设备负荷联动试运转本着逐步加载的原则,即开始进行()负荷联动试运转;然后逐步加载到半负荷试运转;再进行全负荷试运转。
聚焦后的电子束焦点直径为()mm。
下列表示药物安全性最理想的参数是
小儿结核性脑膜炎早期主要临床表现是()
水泥混凝土路面坑洞应为板面出现直径大于()mm、深度大于10mm的坑槽。
下图所示原位测试成果的典型典线为( )。
在电源系统中,()可避免电源设备的金属外壳因绝缘受损而带电。
人际交往的最后一个阶段是()。
小李准备在校园科技周向同学讲解与黑客技术相关的知识,请根据考生文件夹下“Word素材.docx”中的内容,帮助小李完成此项工作。具体要求如下:将“Word素材.docx”另存为“Word.docx”文件,之后所有操作均基于此文件。
最新回复
(
0
)