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
15
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 word flawless in paragraph 3 is closest in meaning to
选项
A、expensive
B、unlucky
C、colorless
D、perfect
答案
D
解析
Flawless means perfect in this context. Clue: 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 (paragraph 1). A flaw is a defect or imperfection; the suffix -less means without.
转载请注明原文地址:https://tihaiku.com/zcyy/3328138.html
相关试题推荐
THEILLUSIONOFFILM1Filmisanillusionbecausethemovingpictu
THEILLUSIONOFFILM1Filmisanillusionbecausethemovingpictu
THEILLUSIONOFFILM1Filmisanillusionbecausethemovingpictu
THEILLUSIONOFFILM1Filmisanillusionbecausethemovingpictu
THEILLUSIONOFFILM1Filmisanillusionbecausethemovingpictu
THEILLUSIONOFFILM1Filmisanillusionbecausethemovingpictu
Thecurrentconcentrationofcarbondioxideintheatmosphereisabout360p
Thecurrentconcentrationofcarbondioxideintheatmosphereisabout360p
Peopleworkbecausetheyneedmoneytolive.Whataresomeotherreasonstha
______crudehydrocarbonsintosuchproductsasgasolineandpetrochemicalsisat
随机试题
[originaltext]M:Weseemtobehavingthisconversationoverandoveragain.W:
Thethirdisproximity,postureandechoing.Proximityreferstothe【T1】____
[A]irrelevant[I]ornamentally[B]reversed[J]discriminate[C]personnel
《巨人传》中的塑造的一个理想的社会是()A.德廉美修道院 B.乌托邦 C.黄
有关会阴体的描述不正确的是( )A.厚约3~4cm B.是阴道口与肛门之间的
通过影响下属达到实现组织和集体目标的行为过程,其目的是使下属心甘情愿地为组织目标
影响饭店人力资源外部供给的因素主要有( )。A.本地区内人口总量与人力资源率
在国际化的资源中,供应商资源、供应链下游的经销商关系等资源应属于()资源。A.
中国期货业协会应当建立期货从业人员信息数据库,公示并且及时更新从业资格注册和(
人体实验是() A.以人作为受试对象的试验 B.以患者作为受试对象的试验
最新回复
(
0
)