首页
登录
职称英语
[img]2016m12s/ct_eyyjscz2015j_eyyjsccloze_0151_201611[/img] Diamond is the h
[img]2016m12s/ct_eyyjscz2015j_eyyjsccloze_0151_201611[/img] Diamond is the h
游客
2023-10-17
42
管理
问题
Diamond is the hardest naturally occurring substance known. It is the most popular gemstone and because of its extreme 【C1】______(hard), it is also used for various industrial purposes. Scientists are still 【C2】______(sure)of the exact process by which diamonds are naturally formed, but it is certain that both extreme heat and enormous pressure are needed. It is, therefore, likely that diamonds were formed far【C3】be______the Earth’s surface where these conditions exist. The first synthetic diamonds were successfully produced in the 1950s, but the best and largest stones are still those created by nature.
The word ’ diamond’ comes from the Greek ’ adamas’ , which means invincible, but the first definite reference to diamonds occurs in Roman literature of the first century A. D. The diamonds known to the Romans came from India, which was the only 【C4】______(supply)of the stones until the eighteenth century. In 1762, diamonds were discovered in Brazil, and then in 1866 in South Africa, the main source of diamonds in the world today.
The idea that men should give diamonds to the women they 【C5】______is quite new. It was invented in the last century by De Beers, the company that owns the South African diamond mines. The idea that ’diamonds are forever’ does not hold water either. Although diamonds are very hard, they can be【C6】dam______.
The largest of all known diamonds was the Cullinan. It was【C7】disc______in South Africa in 1905 and given to Edward VII, king of Great Britain. It was cut into smaller stones, the largest of which—and still the largest cut diamond in 【C8】______(exist)—is called the Star of Africa.
There have been a lot of diamond thefts in recent years, but scientists can now mark stones to show who own them. Usually this mark is 【C9】______(visible), so thieves can’t tell if a diamond is marked. 【C10】O______the people who know how to make the mark appear can tell whether a diamond is marked or not. [br] 【C5】
选项
答案
love
解析
(该句是说“男性应该向他所爱的女性赠送钻石是一个新鲜的主意”,根据目前的现状可知本题答案。)
转载请注明原文地址:https://tihaiku.com/zcyy/3105800.html
相关试题推荐
[img]2016m12s/ct_eyyjsdm_eyyjsdreadb_0064_201612[/img]【B1】______Manyofthe
[img]2016m12s/ct_eyyjsdm_eyyjsdreadb_0064_201612[/img]【B1】______Manyofthe
[img]2016m12s/ct_eyyjsdm_eyyjsdreadb_0064_201612[/img]【B1】______Manyofthe
[img]2016m12s/ct_eyyjsdm_eyyjsdreadd_0076_201612[/img]Certainbirdsare,mo
[img]2016m12s/ct_eyyjsdm_eyyjsdreadd_0076_201612[/img]Certainbirdsare,mo
WaterforLife[img]2016m12s/ct_eyyjsdm_eyyjsdcloze_
WaterforLife[img]2016m12s/ct_eyyjsdm_eyyjsdcloze_
WaterforLife[img]2016m12s/ct_eyyjsdm_eyyjsdcloze_
WaterforLife[img]2016m12s/ct_eyyjsdm_eyyjsdcloze_
WaterforLife[img]2016m12s/ct_eyyjsdm_eyyjsdcloze_
随机试题
王教授,请您赏光来参加我们星期六的英语晚会好吗?ProfessorWang,pleasedousthehonorofattendingour
[originaltext](1)One"badapple"canspreadnegativebehaviorlikeavirustob
患者男,33岁,发现左手环指远指间关节掌侧渐进性无痛性增大肿物5个月余。查体:左
王先生今年30岁,在一家房地产公司工作,该公司效益较好,于今年成立了企业年金理事
每小节有两个以上不同类型的单拍子组合起来的拍子叫( )。A.变拍子 B.复拍
患儿,6个月,夜间哭闹,多汗烦躁,发稀。此时应首先添加的辅食是A.鱼泥 B.蛋
某工业架空热力管道工程中,型钢支架工程的实测数据如下: (1)每焊接1吨型钢支
若已知按荷载效应的标准组合计算的跨中弯矩值Mk=100kN·m,则裂缝间
银行承兑汇票的承兑银行,应当按照票面金额向出票人收取()的手续费。A:千分之一
《水法》中的水工程是指在江河、湖泊和地下水源上( )水资源的各类工程。A.开发
最新回复
(
0
)